Running Plan Review Advanced Marathoning 18-Week, 70 to 85 mi/wk
By Advanced Marathoning (2nd ed.) — Pete Pfitzinger and Scott Douglas Requires purchase Visit plan website
Plan at a Glance
Most marathon plans treat marathon pace as something you rehearse, never something you live in. They sprinkle a few 3-mile tempo blocks at goal pace and call it preparation. The defining workout of this plan, dropped three weeks before the race, is a 14-mile continuous block at marathon pace. By the time you reach it, race pace is no longer an idea you'll need to discover on the day. It's a feeling your legs already recognize.
What separates advanced marathon plans from the rest isn't really the long run. Most plans get to 20 miles. This one touches 24. What separates them is what happens at marathon pace and how often you visit it under fatigue. The risk for an experienced marathoner is the opposite of what beginners face. It isn't undertraining but training hard without enough race-specific work, so that fitness shows up on race day in the wrong shape for the distance.
Pete Pfitzinger, a two-time US Olympic marathoner, wrote this with journalist Scott Douglas in the book Advanced Marathoning. It's the middle of three plans in the book and assumes you're already running six or seven days a week off a 55-mile base. Eighteen weeks long, seven running days per week, peaking near 85 miles. If you can't currently hit 55 a week without breaking down, the 55-mpw plan in the same book is the right doorway.
The review below is Buena Vida's full assessment of the plan. We grade every plan against the same detailed, 31-point benchmark. Each measure draws from peer-reviewed sports-science research and proven coaching best practices.
Workouts
Workout names and distances only. Coaching prose belongs to the plan’s author.
Similar plans
Our Review
For an experienced marathoner already running six or seven days a week and holding a 55-mile weekly base, this is the middle Pfitzinger plan. It is one of the strongest marathon builds in print. Eighteen weeks, a peak near 84 miles, and a 24-mile long run three weeks out.
The workout that defines this plan is the 14-mile marathon-pace tempo in week 13. That's a continuous block of race-pace work two and a half times the 3-mile threshold most plans treat as meaningful race-pace rehearsal. By the time it lands, you've spent eleven weeks growing into it. The marathon-pace tempos run 8 miles in week 2, 11 miles in week 6, and 12 miles in week 9. If you can hold the 14 cleanly, race day is no longer a question of pace. It becomes a question of whether the day cooperates with you.
Best for an advanced marathoner with at least two finishes behind them and a 55+ mile base. You'll want to keep Advanced Marathoning by Pete Pfitzinger and Scott Douglas open beside the calendar. The book carries strength work (chapter 4), missed-session priority (chapter 11), and the pace conversion tables (appendices A and B). The calendar does not. If your base is closer to 40 weekly miles, drop to the up-to-55 mpw plan. If you can't run six or seven days a week, this isn't the right starting point.
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Structure
Does the plan build you up smartly?
Largely, yes. The eighteen weeks run through five labeled blocks, endurance, lactate threshold plus endurance, race preparation, taper, and post-marathon recovery, so the build's turns are marked rather than implied. Dropback weeks land at regular intervals to let the load settle, the 24-mile peak sits three weeks before the race, and the taper holds intensity for three weeks while volume falls away. The arc is about as deliberate as marathon plans get. The one structural piece left off the page is strength: Pfitzinger covers it in chapter 4, but no strength session ever lands on the calendar.
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Prevention
Does the plan protect you from injury?
Mostly. Roughly four-fifths of your mileage runs at easy effort, the two weekly hard sessions never sit back to back, and the regular dropback weeks let each climb absorb before the next one. The rolling load stays clean, with even the worst week well short of a risky spike. The ceiling here is anchoring rather than safety: the calendar names paces but not the actual splits, so you set your targets from the table in appendix A rather than reading them off the schedule, and there is no effort-based version of the same numbers on the page.
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Flexibility
What happens when you miss a day?
You will reshape this plan around a busy week largely on your own. The schedule prints no order of priority and no rule for what to drop when a session goes missing. Pfitzinger's own triage does exist, the long run protected first, then lactate threshold, marathon pace, the medium-long run, and general aerobic running last, but it lives in chapter 11 of the book rather than on the calendar. The same goes for the heart-rate and effort anchors that would let you run by feel: they sit in the appendix, not the schedule. The PDF alone leaves the in-the-moment call to your judgment.
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Readiness
Will the plan deliver race-day fitness?
This is where the plan leaves its peers behind. Marathon pace is not something you rehearse a few times here, it is something you live in: the goal-pace tempos climb from 8 miles in week 2 to a single 14-mile continuous block three weeks out, by which point race effort is a feeling your legs already own rather than a number to discover on the day. Three tune-up races from 8K to 15K drop into the race-prep block to sharpen pacing under real conditions. The three-week taper then holds the intensity while volume drops, so you arrive race-fit rather than race-stale. For an experienced marathoner, the race-specific depth here is the whole point.
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Variety
Are the workouts varied enough?
Yes, the range is deep and purposefully placed. Across the build you work eight distinct workout types and six VO2 max rep formats, from 800-meter through 1,600-meter blocks, and each shape lands where it does the most good. Aerobic and endurance work is front-loaded, lactate threshold and marathon pace fill the middle, and the VO2 max sessions are held back to race prep when the body can finally use them. The single design gap is strength, which the book treats as a companion but the schedule treats as optional, so it never appears among the rotating sessions.
Plan Strengths
- Marathon-pace tempos grow from 8 miles in week 2 to 14 continuous miles in week 13. Race pace will sit in your legs by race day.
- Three tune-up races (8K to 15K) drop into the race-prep block, so you'll have raced for pacing before the marathon, not on a track.
- Your peak long run reaches 24 miles three weeks out, with 22 and 20-mile touches on either side giving the distance a familiar feel.
- Six VO2 max rep formats rotate across the build. They run from 800m and 600m up through the longer 1000m to 1600m reps and a peak 6 × 1000m set. Speed development never stales.
- After the peak, you taper for three full weeks. Volume drops twice and bottoms out in race week while strides keep the legs sharp.
- Roughly four-fifths of your mileage runs at easy effort, and hard days never stack. You'll arrive at week 18 not cooked.
Weaknesses & gaps
- Strength training never appears on the calendar. Chapter 4 recommends two sessions a week and you'll schedule them yourself.
- Missing a session leaves you guessing. The cut-order rule lives in chapter 11, not on the calendar you'll be reading daily.
- No workout on the calendar carries a split. Every pace target means a trip to appendix A before you lace up.
- No graduated entry: the plan assumes you finish each preceding block without injury, and there's no on-ramp from a 40-mile base.
- Sleep, fueling, foam rolling, and rest-day form work all live in chapter 5. The day-by-day grid covers running only.
What this plan does not give you
Strength work never lands on the calendar even though the book asks for two sessions a week. Plan to slot them on Tuesdays and Fridays, away from the hardest run days, and treat them as required rather than optional. The schedule names paces (marathon, threshold, VO2 max) but not splits, so you'll be flipping to appendix A to convert each effort into seconds per mile. If you miss a session, the cut-order rule lives in chapter 11, not on the day-by-day grid. Photocopy that page and keep it next to the calendar. There's also no on-ramp from a lower base. Week 1 already asks for about 65 miles, so build that floor in the two months before the plan starts rather than scrambling once it's begun.
What the science supports
Periodization beats constant-load training
The eighteen weeks divide into four named blocks. Endurance runs through week 7 and lactate threshold through week 11. Race prep runs through week 16, then the taper begins. Each phase adds a fresh stimulus rather than mixing everything from day one. Marathon-pace tempos open in week 2, threshold runs anchor the middle months, and the 6 × 1000m interval set lands in race prep. That sequencing, not the raw mileage, is the structural choice the periodization literature credits with the improvement.
Bradbury et al. 2020; Tønnessen et al. 2014; Casado et al. 2022
Long runs are essential for marathon
The long run peaks at 24 miles three weeks out, with 22 and 20-mile efforts framing it on either side. Multiple weekends between weeks 8 and 16 sit at 17 to 20 miles, and several carry an embedded marathon-pace block of 8 to 14 continuous miles. By race day the distance feels familiar in the legs. Research ties that prolonged sub-threshold exposure to the substrate and connective-tissue durability needed to hold pace past mile 20.
Toresdahl et al. 2021; Jones & Kirby 2025; Casado et al. 2019
Race-pace specificity hinges on physiology
Marathon-pace work builds methodically: 8 continuous miles in week 2 stretching to 14 unbroken miles in week 13. Several long runs embed those blocks inside 18 to 22-mile efforts, so the goal rhythm sits in legs already carrying late-race fatigue. An advanced marathoner's target pace runs close to lactate threshold. That repeated exposure to the actual race intensity is the form of pace-specific training research finds transfers cleanly to race day.
Pierce et al. 1990; Hewson & Hopkins 1996; Jones et al. 2021
Polarized training beats threshold-dominated
Roughly four-fifths of the weekly mileage runs at easy effort. The hard sessions sit at clear ends of the spectrum: marathon pace and lactate threshold on one side, 5K-pace VO2 max repeats on the other. Steady moderate grinding never anchors a week. For trained runners building toward a marathon, that easy-heavy base with sharp hard ends is the distribution research finds outperforms threshold-dominated work.
Stöggl & Sperlich 2014; Casado et al. 2022; Kenneally et al. 2017
Varied intensity beats steady moderate pace
The harder sessions rotate rather than repeat. Six VO2 max formats cycle through 800m, 600m, 1000m, 1200m, 1600m, and a peak 6 × 1000m set. Threshold runs and growing marathon-pace tempos fill in alongside. Three tune-up races (8K to 15K) drop into race prep as above-threshold efforts in disguise. The varied stimulus, instead of week after week of the same moderate tempo, is the pattern shown to produce larger VO2 and time-to-exhaustion gains.
Stöggl & Sperlich 2014; Rosenblat et al. 2019; Casado et al. 2022
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Frequently asked questions
- Is Advanced Marathoning 18-Week, 70 to 85 mi/wk good for beginners?
- No. Advanced Marathoning 18-Week, 70 to 85 mi/wk is built for advanced-level runners. A true beginner should start with a lower-mileage plan.
- How many days per week does Advanced Marathoning 18-Week, 70 to 85 mi/wk require?
- The plan runs on a schedule of multiple weekly runs. See the at-a-glance strip for the exact count.
- Does Advanced Marathoning 18-Week, 70 to 85 mi/wk include a taper?
- Yes, the plan includes a taper into race week.
- What is the rubric grade for Advanced Marathoning 18-Week, 70 to 85 mi/wk?
- Advanced Marathoning 18-Week, 70 to 85 mi/wk grades B on the Buena Vida rubric.