Skip to content
A runner with a hydration belt and bottle on a long polder road at sunrise

Running plans & training

Marathon training plan: 16 or 20 weeks, 3 days a week

For runners with a base: 16 weeks after a recent half marathon, 20 weeks with less of a base. Long runs, recovery weeks, fueling practice, and a taper.

Reading time: 20 minLast updated: November 3, 2026

01 · Who are they for?Who are these plans for?

The goal is to run a marathon continuously, without walking or rest breaks. You build toward completing the distance; speed or a particular finish time is not the aim of these plans. The tempo blocks help you practice the effort for this distance; they are not designed to chase a faster finish time.

Want to train for a specific finish time or improve your PR (personal record)? A personal plan works toward your goal with sessions matched to your level and available days. Tempo blocks and any intervals are tailored to that goal too. Aiming to break 4 hours? Read the sub-4-hour marathon training plan, with goal pace and training paces.

The 16-week plan suits:

Runners who have recently completed a half marathon comfortably and want to build toward 42.2 km26.2 mi.
Runners who have been running three times a week for around two months, totaling 3 to 3.5 hours (about 30 km18.6 mi), and recover well between sessions.
Runners comfortable with an easy run of about 15 km9.3 mi who can also make time for weekday sessions of about 80 minutes.
Runners with sixteen weeks to prepare for finishing the marathon.

Week 1 — 32, 60, and 118 minutes, 210 minutes in total — builds on that existing routine. Three running days may fit your schedule, but the sessions become longer as the plan progresses.

The 20-week plan fits if you have been running three times a week for a while, totaling about 2 to 2.5 hours, and an easy run of around 90 minutes (about 12 km7.5 mi) feels familiar. You do not need a recent half marathon: you take four extra weeks to expand your base gradually.

Running less than that, or is 90 minutes at a time still too long? Build your base first with the half marathon training plan and maintain that regular routine for a while. If you have the base but cannot fit the longer weekday sessions into your schedule, explore a different weekly structure with a personal plan. Do not drop those sessions just to keep the long run.

02 · 16 or 20 weeks?16 or 20 weeks: which plan fits?

Choose 16 weeks if you have recently run a half marathon comfortably and already train 3 to 3.5 hours a week. Your first week totals 210 minutes. Every week brings one session with blocks at threshold pace; you run the other sessions easy, apart from the faster finish of a few long runs.

Choose 20 weeks if you have less of a base or prefer a more gradual build. You start at 141 minutes a week. The four extra weeks go toward expanding your easy running first; short threshold sessions come later.

Not sure? Look at the first week of each plan and choose the one whose first week already feels manageable. Starting too hard is something you cannot make up for later.

03 · How to use itHow to use this plan

Easy running means you can speak in full sentences. Start especially gently and finish comfortably. That is part of the listed time: a 60-minute easy run does not need a separate warm-up added to it.

An easy long run is the longer session on Sunday. The main difference is duration, not a faster pace: you should still be able to speak in full sentences, apart from a faster finish when the table lists one. The shorter easy weekday runs and the longer run together make up your training week. The long run is more demanding because you run for longer, even at the same easy effort.

Every part of a block session appears in its table cell. The total includes the warm-up, blocks, prescribed recovery, and cool-down. In both plans, each block comes with its own recovery: in 3 × (5 min at threshold pace + 1 min easy), you run one easy minute after each block and then move into the cool-down. Monday in week 1 of the 16-week plan therefore takes 10 + 3 × 6 + 4 = 32 minutes. Extra walking before the session is optional and outside that time. Read more about warming up and cooling down.

04 · 16 weeks · 3 days a weekMarathon training schedule: 16 weeks, 3 days a week

Over 16 weeks, you build toward 42.2 km (26.2 mi)26.2 mi (42.2 km). The table matches what the plan builder creates for an example runner who recently ran a half marathon in 2:05 and currently runs about 30 km18.6 mi a week over three runs, with a longest run of 15 km9.3 mi. You run on Monday, Wednesday, and Sunday: you start at 210 minutes a week and build to 320 minutes in week 8. Weekday runs grow alongside the long run. Weeks 5 and 9 are easier. From week 14, you taper: less training so you can arrive at the start feeling rested.

Leave at least one full day without running between every session, preferably two before the longest and most demanding run on Sunday. Running on Monday, Wednesday, and Sunday leaves Tuesday, Thursday, Friday, and Saturday free from running, so you even get three days without running before the long run. Exception: in week 16, you run 20 easy minutes on Saturday, the day before the marathon on Sunday.

Once a week, there is a session at threshold pace: on Monday in week 1, then on Wednesday. Threshold pace is comfortably hard, an effort you could sustain for about an hour, when you can only say a few words at a time. Marathon effort means the controlled effort you intend to sustain during the marathon, at a pace supported by your preparation. Your breathing stays steady and you can still say a short sentence. If you do not have a well-supported marathon pace or simply want to finish, run the faster finish at the same conversational effort as your easy runs. How to read the table:

Blocks with recovery: in 3 × (5 min at threshold pace + 1 min easy), you run one easy minute after each block. Those minutes count toward the total, as do the warm-up and cool-down.
Long run with a faster finish: you run most of it easy and the last 24 to 29 minutes at marathon effort.

For the example runner, easy running in week 1 is around 7:00 min / km11:16 min / mi and the long run around 7:25 min / km11:56 min / mi. Marathon effort is around 6:15 min / km10:04 min / mi. Threshold pace starts around 5:40 min / km9:07 min / mi and shifts to about 5:15 min / km8:27 min / mi during the plan. These are examples, not instructions: your paces depend on your own level. If you do not know them, run by breathing and feel.

Foundation: weeks 1–6

In week 1, you run the threshold blocks on Monday and an easy run on Wednesday; from week 2, those two swap. The easy Monday run grows to 80 minutes. Sunday brings the long run, with a faster finish in weeks 1, 3, and 6. Week 5 is easier, with shorter blocks and a shorter long run. In week 6, the threshold session gets longer, with more easy warm-up before the blocks.

WeekMondayWednesdaySunday
1Threshold blocks
10 min easy warm-up
3 × (5 min at threshold pace + 1 min easy)
4 min easy cool-down
Total: 32 min
60 min easy runningLong run with a faster finish
94 min easy
24 min at marathon effort
Total: 118 min
262 min easy runningThreshold blocks
10 min easy warm-up
4 × (5 min at threshold pace + 1 min easy)
4 min easy cool-down
Total: 38 min
134 min easy long run
371 min easy runningThreshold blocks
10 min easy warm-up
4 × (5 min at threshold pace + 1 min easy)
4 min easy cool-down
Total: 38 min
Long run with a faster finish
114 min easy
29 min at marathon effort
Total: 143 min
480 min easy runningThreshold blocks
13 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
6:12 min easy cool-down
Total: 48 min
153 min easy long run
5 · easier80 min easy runningThreshold blocks
12 min easy warm-up
3 × (4 min at threshold pace + 1 min easy)
6 min easy cool-down
Total: 33 min
107 min easy long run
680 min easy runningThreshold blocks
30 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
14:12 min easy cool-down
Total: 73 min
Long run with a faster finish
115 min easy
29 min at marathon effort
Total: 144 min

Build: weeks 7–13

On Monday, you run 80 easy minutes, and Wednesday brings a threshold session of 68 to 76 minutes. Most of the growth now goes into the Sunday long run. Week 9 is a recovery week. From week 10, longer and shorter long runs alternate: 145 minutes in weeks 10 and 12, 171 minutes in weeks 11 and 13.

We deliberately use threshold blocks and a faster finish at marathon effort rather than fast intervals here: this plan focuses on finishing the marathon. Want to focus more on speed? Create a personal plan tailored to your level and target time.

WeekMondayWednesdaySunday
780 min easy runningThreshold blocks
34 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
13:12 min easy cool-down
Total: 76 min
149 min easy long run
880 min easy runningThreshold blocks
34 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
13:12 min easy cool-down
Total: 76 min
164 min easy long run
9 · easier80 min easy runningThreshold blocks
27 min easy warm-up
3 × (4 min at threshold pace + 1 min easy)
14 min easy cool-down
Total: 56 min
115 min easy long run
1080 min easy runningThreshold blocks
34 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
13:12 min easy cool-down
Total: 76 min
145 min easy long run
1180 min easy runningThreshold blocks
26 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
13:12 min easy cool-down
Total: 68 min
171 min easy long run
1280 min easy runningThreshold blocks
34 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
13:12 min easy cool-down
Total: 76 min
145 min easy long run
1380 min easy runningThreshold blocks
26 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
13:12 min easy cool-down
Total: 68 min
171 min easy long run

The longest run lasts 171 minutes, in weeks 11 and 13. For the example runner, at around 7:00 min / km11:16 min / mi, that is about 24.5 km15.2 mi; at 6:00 min / km9:39 min / mi it would be 28.5 km17.7 mi. Focus on time on your feet rather than ticking off a set distance. You do not need to run the full marathon in training. If you intend to alternate running and walking during the marathon, choose a plan that develops that pattern in training too; this table is based on continuous running. Do not extend the final long run to cover the full race distance.

The peak week, week 8, contains 320 minutes: 80 and 76 minutes during the week, plus 164 on Sunday. Weeks 11 and 13, with the longest run, contain 319 minutes: 80 and 68 minutes during the week, plus 171. Alongside the running, leave time to eat, sleep, and recover.

Taper: weeks 14–16

Runs become shorter, but you keep three running days. On Wednesday, you keep short threshold blocks. They keep the effort familiar; they are not a final fitness test. Week 14 has 243 minutes and week 15 has 192. In week 16, you run 47 easy minutes on Monday, an easy session with four short pickups at marathon effort on Wednesday, and 20 easy minutes on Saturday: 116 minutes in total before the marathon on Sunday.

WeekMondayWednesdaySunday
1480 min easy runningShort threshold blocks
16 min easy warm-up
3 × (5 min at threshold pace + 1 min easy)
9 min easy cool-down
Total: 43 min
120 min easy long run
1568 min easy runningShort threshold blocks
16 min easy warm-up
3 × (5 min at threshold pace + 1 min easy)
10 min easy cool-down
Total: 44 min
80 min easy long run
1647 min easy running24 min easy
4 × (1 min at marathon effort + 2 min easy)
13 min easy
Total: 49 min
Saturday: 20 min easy with a few strides
Marathon · Sunday
I want to runmarathon,3 ×a week, in16 weeks

Use the extra time for sleep and practical preparation. There is no need to catch up on missed sessions now. Read more about sleep and recovery.

A personal plan uses the level, goal, and available days you enter. It creates a new plan rather than importing this table.

05 · 20 weeks · 3 days a weekMarathon training schedule: 20 weeks, 3 days a week

This plan is for runners with less of a base. The table matches what the plan builder creates for an example runner who currently runs about 20 km12.4 mi a week over three runs, with a longest run of 12 km7.5 mi. Over 20 weeks, you build toward 42.2 km (26.2 mi)26.2 mi (42.2 km). You run on Tuesday, Thursday, and Sunday: you start at 141 minutes a week and build to 316 minutes in week 17. Weeks 5, 9, and 13 are easier. From week 18, you taper toward the marathon in week 20.

The first four weeks are almost entirely easy. From week 6, Tuesday brings a session at threshold pace: comfortably hard, an effort you could sustain for about an hour, when you can only say a few words at a time. How to read the table:

With strides: at the end of the easy run, run a few relaxed, quick bursts of 15 to 20 seconds, with about a minute of walking or easy jogging between them. The strides are included in the listed time.
Blocks with recovery: in 3 × (4 min at threshold pace + 1 min easy), you run one easy minute after each block. Those minutes count toward the total, as do the warm-up and cool-down.
Long run with a faster finish: you run most of it easy and the last 24 to 29 minutes at marathon effort.
Rest: Monday, Wednesday, Friday, and Saturday are free from running, so you get two rest days before the Sunday long run.

For the example runner, easy running in week 1 is around 6:50 min / km11:00 min / mi and the long run around 7:15 min / km11:40 min / mi. Threshold pace starts around 5:25 min / km8:43 min / mi and shifts to about 5:05 min / km8:11 min / mi during the plan. These are examples, not instructions: your paces depend on your own level. If you do not know them, run by breathing and feel.

WeekTuesdayThursdaySunday
127 min easy running27 min easy running87 min easy long run
230 min easy running30 min easy running95 min easy long run
332 min easy running with stridesProgressive run
20 min easy
10 min at marathon effort
3 min at threshold pace
Total: 33 min
104 min easy long run
437 min easy running with strides36 min easy running114 min easy long run
5 · easier34 min easy running with strides32 min easy running80 min easy long run
6Threshold blocks
10 min easy warm-up
3 × (4 min at threshold pace + 1 min easy)
4 min easy cool-down
Total: 29 min
48 min easy running with stridesLong run with a faster finish
95 min easy
24 min at marathon effort
Total: 119 min
7Threshold run
10 min easy warm-up
15 min at threshold pace
5 min easy cool-down
Total: 30 min
53 min easy running with strides134 min easy long run
8Fartlek
10 min easy warm-up
6 × (3 min at threshold pace + 1:30 min easy)
4 min easy cool-down
Total: 41 min
51 min easy running with stridesLong run with a faster finish
114 min easy
29 min at marathon effort
Total: 143 min
9 · easier43 min easy running with strides42 min easy running103 min easy long run
10Threshold blocks
12 min easy warm-up
4 × (5 min at threshold pace + 1 min easy)
7 min easy cool-down
Total: 43 min
66 min easy running with strides146 min easy long run
11Threshold run
27 min easy warm-up
20 min at threshold pace
15 min easy cool-down
Total: 62 min
67 min easy running with strides146 min easy long run
12Fartlek
23 min easy warm-up
6 × (3 min at threshold pace + 1:30 min easy)
13 min easy cool-down
Total: 63 min
67 min easy running with strides160 min easy long run
13 · easier58 min easy running with strides57 min easy running112 min easy long run
14Threshold blocks
20 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
12:12 min easy cool-down
Total: 61 min
67 min easy running with strides143 min easy long run
15Threshold run
20 min easy warm-up
20 min at threshold pace
13 min easy cool-down
Total: 53 min
67 min easy running with strides168 min easy long run
16Fartlek
23 min easy warm-up
6 × (3 min at threshold pace + 1:30 min easy)
13 min easy cool-down
Total: 63 min
67 min easy running with strides143 min easy long run
17Threshold blocks
23 min easy warm-up
3 × (8 min at threshold pace + 1:36 min easy)
14:12 min easy cool-down
Total: 66 min
82 min easy running with strides168 min easy long run
18 · taperShort threshold blocks
14 min easy warm-up
3 × (5 min at threshold pace + 1 min easy)
9 min easy cool-down
Total: 41 min
82 min easy running with strides118 min easy long run
19 · taperShort threshold blocks
16 min easy warm-up
3 × (5 min at threshold pace + 1 min easy)
9 min easy cool-down
Total: 43 min
69 min easy running with strides79 min easy long run
2024 min easy
4 × (1 min at marathon effort + 2 min easy)
13 min easy
Total: 49 min
Rest daySaturday: 20 min easy with a few strides
Marathon · Sunday
I want to runmarathon,3 ×a week, in20 weeks

The longest run lasts 168 minutes, in weeks 15 and 17. For the example runner, that is about 25 km15.5 mi. Here too, time on your feet matters more than a set distance. The peak week, week 17, contains 316 minutes: 66 and 82 minutes during the week and 168 minutes on Sunday. In race week, you run one short session on Tuesday and 20 easy minutes on Saturday to loosen up your legs.

06 · Final weeksThe final weeks before your marathon

In both plans, the last three weeks are the taper: you train less so you arrive at the start feeling rested. You keep the same number of running days and some short, quicker blocks, so the effort stays familiar. This is how your training time drops:

16 weeks20 weeks
Peak week320 min (week 8)316 min (week 17)
First taper week243 min (week 14)241 min (week 18)
Second taper week192 min (week 15)191 min (week 19)
Race week116 min + marathon69 min + marathon
Your last long run is your dress rehearsal. It falls three weeks before the marathon: week 13 in the 16-week plan, week 17 in the 20-week plan. Test your breakfast, clothing, shoes, and fueling and hydration the way you plan to use them on race day.
Do not catch up. Let a missed session during the taper go. Extra miles will not make you fitter now, only more tired.
Feeling heavy or restless is normal. Training less can feel like losing fitness. You do not lose it in a few easier weeks; stick to the table.
Sort out logistics early. Bib pickup, getting to the start, aid stations, and the weather forecast: check them during the final week and lay out your gear the night before.

How to pace the race itself is covered below under race day.

07Training principles

For 42.2 km26.2 mi, easy weekday running, long runs, and recovery need to work together. Both plans focus on finishing, guided by these principles:

Build across the whole week. Easy weekday sessions grow alongside the long run. Do not routinely skip them just to complete the weekend long run.
Use quicker blocks carefully. Keep the marathon-effort and threshold blocks controlled. The plans do not include fast intervals at 10K pace; runners focused on a faster finish can choose a personal plan.
Long runs & preparation. Keep long runs easy, apart from the faster finish, and practice fueling, fluids, and gear. The peak is 171 minutes (16 weeks) or 168 minutes (20 weeks); do not extend it to 42.2 km26.2 mi.
Recovery & taper. Use the lighter weeks to ease back and taper over the last three weeks. Keep at least two days free from running before the Sunday long run: Thursday through Saturday in the 16-week plan, Friday and Saturday in the 20-week plan.

08 · Adjusting a sessionWhen a session does not fit

Missed a run? Leave it behind and continue with the next planned session once recovered. Do not add the missed minutes to your long run.
Still tired after the long run? Make the next session shorter and easy. Repeat the last long run you handled well before increasing its duration.
Missed a whole week? Return to an earlier week that went well. If illness or injury keeps you away longer, adjust your race plans too.
Pain that changes your stride or keeps returning? Stop the session and have persistent symptoms assessed.

09 · Practice fuelingPracticing fueling and hydration

A long run also lets you rehearse what to carry and when to eat. Choose familiar products, check their carbohydrate content, and note how your stomach responds. For exercise lasting roughly 1 to 2.5 hours, 30–60 grams of carbohydrate per hour is a common guideline; for longer efforts, a higher intake up to around 90 grams per hour may be relevant. That requires practice and suitable products. Do not try an untested amount on race day; a sports dietitian can help tailor the approach.

Count grams, not just gels. Two gels containing 25 grams each provide 50 grams of carbohydrate; sports drink contributes too. Spread your practiced amount across the hour and follow the product directions, including any instructions about water. One gel every thirty minutes does not automatically suit every product or runner.

Plan drinking into your route: what will you carry and where can you reliably refill? The route planner can help you create a loop returning to your start point. Check drinking-water facilities yourself. Use training to learn what you need in different conditions; a cool morning and a hot afternoon call for different approaches. Avoid forcing down liters to meet a fixed target.

A runner refills a water bottle at a public drinking fountain

Rehearse breakfast and the gap between eating and setting off as well. In the final days, include familiar carbohydrate-rich foods such as bread, rice, pasta, and potatoes with your meals. For a structured carbohydrate-loading strategy, match the amount and distribution to body weight, expected race duration, and tolerance rather than simply eating more.

10 · Race dayRace day: pacing, fueling, and recovery

Start at a pace supported by your preparation, not just a desired finish time. The marathon pace calculator converts a chosen finish time into pace and splits; it does not predict what you can achieve.

Start conservatively. Choose a pace supported by your preparation and keep the first part of the race controlled.
Check your splits. Compare pace and effort every 5 km3.1 mi, for example. Wind, heat, and crowds may call for an early adjustment.
Follow your fueling plan. Use the food and drinking routine you practiced and know where the aid stations will be.
Use familiar gear. Save new shoes, socks and gels for another occasion.
After the finish. Walk gently if you feel well, change into dry clothing, and have fluids and familiar food containing carbohydrate and protein, such as yogurt with fruit and bread.
Allow time to recover. Do not immediately start another training block. Take unusual exhaustion or pain seriously. Your next goal can wait until moving and running feel comfortable again.

11 · MistakesCommon mistakes

Extending every long run. The whole training week and your recovery matter more than one impressive distance.
Running easy days hard. Keep a clear difference between easy and stronger efforts. Slowing down when tired is not a failed session.
Testing fuel on race day. Practice with the same products, carrying system, and drinking opportunities you intend to use.
Catching up during the taper. The final weeks reduce the load; they are not a chance to make up missed training.
Wearing new gear at the start. Test shoes, socks and clothing on longer runs so you know how they feel.

12 · FAQFrequently asked questions

Summary and next step

This marathon training plan takes you to 42.2 km (26.2 mi)26.2 mi (42.2 km) with three running days: in 16 weeks if you have already run a half marathon, in 20 weeks if you have less of a base. Your existing running base, recovery, and practiced fueling determine how useful it is for you. Let the easier weeks stay easy and adjust your goal if preparation changes. After the marathon, allow time to recover before choosing your next goal. Training for a target time, on more or different days, or with a different amount of preparation time? Create a personal plan that fits.

Create your personal plan
Runner and athlete doing lunges in a gym
Reading time: 12 min

Combining running and strength training

Runner resting after a workout with a cup of tea
Reading time: 6 min

Sleep and recovery for runners

Close-up of bent legs and running shoes during a lunge on a running track
Reading time: 12 min

Running warm-up and cool-down: practical routines

Breakfast with bagel, banana, and sports drink before a race
Reading time: 6 min

Race-day nutrition

Comments