01Who is Pete Pfitzinger?
Pete Pfitzinger is a former American elite marathon runner who brings a unique combination of practical experience and scientific knowledge to running training. With a personal record of 2:11:43 and two victories at the American Olympic Marathon Trials (1984 and 1988), he belonged to the absolute top of American long-distance running.
After his active career, Pfitzinger continued his studies and obtained a master's degree in exercise physiology. This combination of elite experience and academic knowledge makes him unique in the running world — he has not only studied physiology, but also experienced the extreme demands of marathon training firsthand. He knows what it means to run 200 km124.3 mi a week while working a full-time job.
His book Advanced Marathoning, co-authored with sports journalist Scott Douglas and first published in 2001, has become one of the best-selling and respected marathon training books in the world. It offers evidence-based schemes for marathon runners of all levels — from ambitious recreationalists to sub-elite athletes.
What sets Pfitzinger's approach apart from many other methods is the emphasis on volume in combination with specific quality training. He believes that the marathon is fundamentally an aerobic race that requires a tremendous aerobic base, but that base must be refined with specific marathon-pace training. His schedules are demanding but well thought out, with a logical progression that gives the body time to adapt.
02Pfitzinger's core principles
Volume as a foundation
The medium-long run (MLR)
Specific marathon training
Periodization in clear phases
The role of recovery
1. Volume as a foundation
The central tenet of Pfitzinger's philosophy is that consistent high volume is the key to marathon success. The marathon is 42.195 km26.2 mi long — there is no shortcut around this fact. The more distance your body is used to running, the better prepared you will be for the demands of the race.
Pfitzinger offers schemes of different volumes, each tailored to a certain ambition level:
| Target time | Peak volume | Avg. volume | Long run | Minimal base |
|---|---|---|---|---|
| Sub 3:45 | 72 km44.7 mi/week | 55 km34.2 mi–65 km40.4 mi | 29 km18 mi | 35 km21.7 mi+/week |
| Sub 3:30 | 72 km44.7 mi–88 km54.7 mi/week | 60 km37.3 mi–75 km46.6 mi | 32 km19.9 mi | 45 km28 mi+/week |
| Sub 3:15 | 88 km54.7 mi/week | 70 km43.5 mi–80 km49.7 mi | 34 km21.1 mi | 55 km34.2 mi+/week |
| Sub 3:00 | 100 km62.1 mi–110 km68.4 mi/week | 85 km52.8 mi–95 km59 mi | 35 km21.7 mi | 70 km43.5 mi+/week |
| Elite | 120 km74.6 mi+/week | 100 km62.1 mi–110 km68.4 mi | 37 km23 mi+ | 85 km52.8 mi+/week |
The volumes are not arbitrary — they are based on what is physiologically necessary to stimulate the aerobic adaptations you need for a specific target time. A sub-3-hour marathon requires an exceptionally developed aerobic system that can only be achieved through years of consistent high-volume training.
2. The medium-long run (MLR)
The most distinctive and innovative element of Pfitzinger's method is the medium-long run (MLR). This is an endurance run of 19 km11.8 mi–26 km16.2 mi that you run during the week, in addition to your long run on the weekend.
Most traditional marathon schedules focus almost exclusively on the long run as the primary endurance training. Pfitzinger challenged this assumption. He reasoned: why go for a long run only once a week when you can go twice? By adding a second longer run — not as long as the Saturday long run, but considerably longer than a standard weekday workout — you effectively double your exposure to longer efforts.
The physiological and mental benefits of the MLR:
Doubling prolonged aerobic stress. Your body is forced twice a week to use glycogen stores and optimize fat burning Higher total volume of quality endurance runs. Instead of one endurance run of 32 km19.9 mi, you have a total of 32 km19.9 mi + 22 km13.7 mi = 54 km33.6 mi of longer efforts Simulation of tired legs. The MLR on Tuesday or Wednesday means that your long run on Saturday will start with legs not yet fully recovered — just like the final stretch of a marathon feel Mental preparation. Completing a substantial run twice a week builds confidence and mental toughness Better training load distribution. Instead of cramming all your long work into one day, spread it out over the week, which promotes recovery
The MLR is run at a comfortable aerobic pace — similar to your normal endurance running pace. It's not a tempo run or marathon pace training; it is purely volume accumulation. The trick is to perform this run consistently without it undermining your ability to do your other workouts well.
3. Specific marathon training
Although volume is the foundation, Pfitzinger recognizes that pure volume is not enough for optimal marathon performance. You also need to train specifically for the demands of the competition. His schemes integrate four main types of quality training:
| Training | Primary purpose | Typical version | When in cycle |
|---|---|---|---|
| Marathon pace runs | Getting used to race pace, practicing glycogen depletion | 12 km7.5 mi–18 km11.2 mi at target pace | Specific phase |
| Progression long runs | Practicing negative splits, mental toughness | 26 km16.2 mi–32 km19.9 mi, last 8 km5 mi–10 km6.2 mi on MP | Specific phase |
| Lactate threshold runs | Increase lactate threshold | 8 km5 mi–15 km9.3 mi continuous or cruise intervals | Entire cycle |
| VO₂max intervals | Maximize aerobic capacity | 4-6 × 800-1600m with jog recovery | Basic structure + specific |
Marathon pace runs are crucial for race preparation. They teach your body to function efficiently at your target pace, burn significant glycogen (which forces your body to burn fat better), and give you confidence that you can handle the pace. Pfitzinger typically programs these 3-8 weeks before the competition.
Progression long runs combine volume with specificity. You start quietly and gradually accelerate to marathon pace in the final stretch. This simulates the feeling of finishing a marathon — running faster when you're already tired — and builds confidence that you can run a negative split.
Lactate threshold training (tempo runs) increases the rate at which lactate begins to accumulate. A higher threshold means that your marathon pace becomes relatively easier. Pfitzinger programs weekly tempo training through most of the cycle.
VO₂max intervals maximize your aerobic capacity. Although the marathon is not a VO₂max event, your VO₂max does determine the ceiling of your aerobic performance. Higher VO₂max means more "room" to increase your marathon pace.
4. Periodization in clear phases
A Pfitzinger plan isn't a random collection of workouts — it's a carefully programmed progression that prepares your body for peak performance on race day. The periodization proceeds in four clear phases:
Phase 1: Construction (4-6 weeks) In this phase you gradually increase your weekly volume to the level of the schedule. If the schedule has a peak volume of 88 km54.7 mi and your current base is 55 km34.2 mi, then you will bring yourself to the base level of the schedule in these weeks. The quality workouts are limited — the focus is on volume accumulation and getting your body used to the higher load.
Phase 2: Basic Endurance (4-6 weeks) Now that the volume has been built, focus on strengthening your aerobic base. The long runs get longer, the MLRs become consistent, and you introduce regular tempo training and VO₂max work. The goal is to maximize your aerobic system before moving on to more specific marathon training.
Phase 3: Specific marathon preparation (6-8 weeks) This is the core phase in which you specifically prepare for the marathon. Marathon pace runs are introduced, progression long runs appear, and long endurance runs reach their maximum (32 km19.9 mi–37 km23 mi). Everything is aimed at simulating competition conditions.
Phase 4: Taper (2-3 weeks) In the last weeks before the marathon, the volume drops significantly (by 20-25% per week), but the intensity is maintained. This gives your body time to fully recover from the training load while maintaining fitness. Good tapering can improve your marathon time by 2-3%.
5. The role of recovery
Pfitzinger is explicit about the importance of recovery within his high-volume approach. Every hard training is followed by one or more recovery runs. These runs are essential — they promote active recovery by stimulating blood circulation, but without adding significant extra load.
Recovery runs should be really slow: 1:00–1:30 min / km1:37–2:25 min / mi slower than your marathon pace. The goal is not to train; the goal is to recover while still accumulating mileage. Many runners make the mistake of running their recovery runs too quickly, which prevents them from fully recovering for their next quality workout.
Pfitzinger also programs strategically placed rest days — typically one per week, sometimes two for the lower-volume schedules. Cross-training (cycling, swimming) can replace some easy days for runners who prefer that.
03The physiology behind the method
Why specifically high volume for the marathon?
The marathon is unique among distance running events in the extreme demands it places on your energy systems. For most runners, glycogen stores become depleted somewhere between 28 km17.4 mi and 35 km21.7 mi — the infamous "wall" moment. To delay or avoid this, your body must:
Be able to store more glycogen: Trained muscles can store up to 30-50% more glycogen than untrained muscles Burn fat more efficiently: With a higher percentage of energy supply from fat, you save glycogen More efficient running: Better running economy means less energy over the same distance Be mentally prepared: Knowing you can handle the distance eliminates doubt
All these adaptations are stimulated by high-volume training. There is no shortcut — you have to put in the miles.
Cumulative fatigue as a training principle
A subtle but crucial aspect of Pfitzinger's method is the concept of cumulative fatigue. By strategically placing the MLR (typically Tuesday or Wednesday), you can achieve the long run on Saturday with legs that are not fully recovered. This simulates the conditions of the last 10 km6.2 mi–15 km9.3 mi of a marathon, when your muscles are already heavily stressed.
This is not an accidental side effect — it is purposefully programmed. Pfitzinger believes that learning to perform on tired legs is an essential skill for marathon success. Your body and mind need to know what it feels like to persevere when you're tired.
04Who is Pfitzinger suitable for?
Ideal for:
Marathon runners with at least 1-2 years of consistent running experience Runners who currently comfortably run 40 km24.9 mi–50 km31.1 mi+ per week Those who aim for a specific marathon goal time and are willing to work for it Athletes who like structured, written schedules with little guesswork Runners who have the time for 6-10+ hours of training per week Anyone who has already run one or more marathons and wants to improve
Less suitable for:
Beginners or first-time marathoners — the volumes are too high to build up safely Runners with little time available — less than 6 hours per week is insufficient Who has shorter distances (5K, 10K, half marathon) as their primary goal Athletes who are prone to injury at higher volumes Runners who prefer flexibility over structure For those who don't like long runs — you run two a week
05 · Higher-volume exampleTypical higher-volume training week
Here is an example of week 8 of an 18-week marathon preparation on the intermediate level (88 km54.7 mi peak) schedule:
| Day | Training | Distance | Tempo/Intensity |
|---|---|---|---|
| Monday | Rest or cross-training | — | — |
| Tuesday | Medium-long run | 21 km13 mi | Easy aerobics |
| Wednesday | Recovery run | 8 km5 mi | Very slow (easy + 1:00–1:30 min / km1:37–2:25 min / mi) |
| Thursday | VO₂max intervals | 14 km8.7 mi total | 3 km1.9 mi warm-up, 5 × 1200m hard (400m jog), 3 km1.9 mi cooldown |
| Friday | Recovery run | 6 km3.7 mi | Very slow |
| Saturday | Long endurance run (progression) | 32 km19.9 mi | First 24 km14.9 mi easy, last 8 km5 mi ascending to MP |
| Sunday | Recovery run | 7 km4.3 mi | Very slow |
Total: ~88 km54.7 mi
Analysis of the week:
Two substantial endurance runs. The MLR on Tuesday (21 km13 mi) and the long endurance run on Saturday (32 km19.9 mi) together form 53 km32.9 mi of longer efforts One quality session. Thursday's VO₂max intervals are the only hard workout — strategically placed after a recovery day Lots of recovery. Four out of seven days are recovery runs or rest, which is essential for handling the high load Progressive long run. The last 8 km5 mi at marathon pace simulates the finish of the race
Variation: a lower-volume week
This example comes from the 72 km44.7 mi plan.
| Day | Training | Distance |
|---|---|---|
| Monday | Rest | — |
| Tuesday | Medium-long run | 18 km11.2 mi |
| Wednesday | Recovery run | 8 km5 mi |
| Thursday | Tempo run | 11 km6.8 mi total (8 km5 mi pace) |
| Friday | Rest or cross-training | — |
| Saturday | Long run | 26 km16.2 mi |
| Sunday | Recovery run | 8 km5 mi |
Total: ~71 km44.1 mi
The lower-volume schedule has the same structure, but with shorter distances and an extra rest day.
06Advantages and disadvantages
Benefits
Widely used across levels. Thousands of runners have run PRs with Pfitzinger schedules, from sub-4 to sub-3 hours Scientific support. Based on physiological principles by someone with an academic background in exercise physiology Fully integrated system. All training methods (volume, pace, intervals, long runs) are thoughtfully combined Flexible options. Schedules from 55 km34.2 mi to 120 km74.6 mi+/week make the method accessible for different levels Clear week-to-week progress. You know exactly what to do every day The MLR is a game-changer. This distinctive element significantly improves your marathon preparation Realistic taper protocol. The final weeks are carefully designed for optimal competition freshness
Disadvantages
High volume is not for everyone. The schedules require significant time investment and physical endurance Time intensive. 7-12+ hours per week of pure running, plus warm-up, cool-down, and stretching Marathon specific. The method is not optimal for shorter distances or other goals Risk of injury due to incorrect application. Building up to the schedule volume too quickly is a common mistake Relatively rigid schedules. There is limited room for adjustment to individual circumstances Requires existing base. You must already be an experienced runner to follow the schedules safely
07How do you apply Pfitzinger in your own training?
Step 1: Determine your starting level honestly
Choose a schedule based on your current stable weekly volume — not on your ambition or what you've ever run. Choosing a schedule that is too ambitious is the quickest path to injury.
Scheme selection guidelines:
55 km34.2 mi schedule. For those who now regularly run 35 km21.7 mi–45 km28 mi per week 72 km44.7 mi schedule. For those who now regularly run 50 km31.1 mi–60 km37.3 mi per week 88 km54.7 mi schedule. For those who now regularly run 65 km40.4 mi–75 km46.6 mi per week 110 km68.4 mi+ schedule. Only for very experienced runners with a long-standing base of 85 km52.8 mi+ per week
Step 2: Build a pre-scheme foundation
Run consistently at your current level for at least 8-12 weeks before starting the Pfitzinger plan. If you have never run 50 km31.1 mi per week and want to follow the 72 km44.7 mi schedule, plan for a build-up period of 3-6 months before starting the schedule. Your body should be used to running regularly.
Step 3: Follow the schedule with precision, but not blindly
Pfitzinger's schedules are carefully designed — every workout has a reason. Respect the structure:
Don't skip medium-long runs — they're just as important as the long run Don't replace easy days with extra quality training Stick to the prescribed paces for each workout
At the same time you have to listen to your body. The schedule is a guide, not a dictator.
Step 4: Respect recovery
The recovery runs and rest days in the schedule are not optional. They are essential for handling the training load. Run your recovery runs really slowly — it must feel almost embarrassingly slow. If you arrive at a quality workout tired, you probably recovered too hard.
Step 5: Monitor your response
Keep track of how your body responds to training:
Is your resting heart rate stable or increasing? Do you feel fresh with quality training? Do you have persistent pain or dormant injuries? Are you sleeping well?
Adjustments are allowed when signals require it. A missed training is better than a month's absence due to injury.
Step 6: Trust the taper
The last 2-3 weeks feel uncomfortable. Your volume drops significantly and you wonder if you are losing fitness. This is normal. The taper is scientifically proven — your body needs this time to fully recover and replenish glycogen stores to the maximum extent. Trust the process.
For an example of a marathon build-up with three runs a week, see our marathon training plan; aiming for a finish time around four hours? See the sub-4-hour marathon training plan.
Want to translate these principles into your own goal and available days? Create a personal plan. It is a tailored alternative, not an official Pfitzinger plan.
08Pfitzinger vs. other marathon methods
| Aspect | Pfitzinger | Hansons | Zones & Quality (VDOT) |
|---|---|---|---|
| Volume | Very high (88 km54.7 mi–120 km74.6 mi+ peak) | High (92.5 km57.5 mi–99 km61.5 mi peak) | Medium to high |
| Longest run | 32 km19.9 mi–37 km23 mi | 26 km16.2 mi (deliberately shorter) | 25 km15.5 mi–30 km18.6 mi |
| Distinctive element | Medium-long run (MLR) | Cumulative fatigue | VDOT Zones |
| Focus | Volume + specific marathon work | Running on tired legs | Zone-specific quality |
| Best for | Experienced marathon runners with time | Marathon runners with a solid base and time for six running days a week | All distances |
| Taper | 2-3 weeks significant | Short: about 10 days | Standard 2-3 weeks |
Pfitzinger vs. Hansons
The biggest difference is the approach to the long run. Pfitzinger programs classic long runs up to 37 km23 mi; Hansons deliberately caps at 26 km16.2 mi, with the philosophy that the cumulative fatigue of high training frequency (6 days per week) simulates the final stretch. Either method works — the choice depends on your personal preference and response to training.
Pfitzinger vs. VDOT
The VDOT approach focuses more on specific training zones and precise paces. Pfitzinger is less rigid in tempo regulations but demands more volume. VDOT works for all distances; Pfitzinger is marathon specific.
09Important training concepts within the method
Glycogen depletion and supercompensation
The long runs and MLRs are designed to significantly use your glycogen stores. This forces your body to adapt by storing more glycogen and burning fat more efficiently. After recovery (supercompensation) you can store more energy than before — crucial for the marathon.
Recovery runs as active recovery
Pfitzinger is specific about the role of recovery runs: they should promote active recovery, not add additional training load. The pace should be slow enough that you can converse completely without any effort. Many runners run their recovery runs too quickly and thus undermine their recovery.
The taper as an integral part
The taper is not an afterthought but a crucial part of the preparation. Pfitzinger programs a 2-3 week taper with a volume drop of 20-25% per week while maintaining the intensity of quality workouts. This ensures physical freshness without loss of fitness.
