Running Plan Review Advanced Marathoning 12-Week, 55 to 70 mi/wk
By Advanced Marathoning (2nd ed.) — Pete Pfitzinger and Scott Douglas Requires purchase Visit plan website
Plan at a Glance
Pete Pfitzinger's marathon programs usually run eighteen weeks. This one runs twelve. The shorter cycle is not a beginner option. It is the version for a runner already deep in marathon shape who needs a focused finishing block. The price of cutting six weeks is no warm-up to the warm-up. You step in running around forty miles a week, and the first long run lands at seventeen miles. Everything after assumes you can absorb that opening week without backing off.
A marathon plan of this length is really a sharpening cycle. You are not building aerobic capacity from scratch over twelve weeks. You are teaching legs that already cover the distance to hold goal pace longer. That is why goal marathon pace appears early and often here, including a twelve-mile block at race pace by week 6. The hard part is not the long runs, which feel familiar. It is rehearsing race effort for an hour or more without drifting into a harder gear that ruins the rest of the day.
Pete Pfitzinger ran the marathon at two Olympic Games and now coaches and writes about endurance training. Scott Douglas is a longtime running journalist. This is one of several plans in their book Advanced Marathoning, the medium-mileage twelve-week build that peaks around seventy miles in a week. It runs six days a week with one rest day, and pace prescriptions reference appendices in the book rather than printing the numbers on the schedule.
Below is Buena Vida's full review of the plan. We score every plan against our detailed, 31-point benchmark. Each measure is drawn 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
You're holding a 45-mile weekly base and a marathon finish. You want a serious second go at the distance, and you have twelve weeks instead of eighteen. This is the middle 12-week plan in the Pfitzinger system, and the compression is what to read for.
The week to brace for is week 6. You meet VO2 max intervals for the first time the same Tuesday your weekly volume climbs 11%, the steepest single-week jump in the build. Clear that week, and you have already rehearsed marathon pace as a continuous 12-mile block. You hit a 21-mile peak long run in week 7. You meet 20 miles again at three weeks out, the long-run rehearsal Pfitzinger is famous for. Week 6 is also where the calendar has the least margin for a missed day, because nothing on the schedule tells you which session to cut when the week breaks.
Best for an intermediate-to-advanced marathoner with at least one finish behind them and a 45-mile weekly base they can hold across the build. You'll also want Advanced Marathoning by Pete Pfitzinger and Scott Douglas on the desk. The schedule names workouts by tag. MP is marathon pace and LT is lactate threshold. MLR is medium-long run and GA is general aerobic. The pace numbers live in appendix A. If your base is closer to 35 weekly miles, drop to the up-to-55 mpw plan first. If you have 18 weeks rather than 12, the longer build spaces the same workouts more forgivingly.
-
Structure
Does the plan build you up smartly?
Mostly. The twelve weeks move through four clear stages. The first builds easy-running endurance, the second adds threshold work (sustained running at the edge of comfortable), the third sharpens for the race, and the last two weeks ease you down toward the start line. Lighter step-down weeks land at weeks 5, 8, and 10 to give your legs a regular reset, which is more recovery rhythm than most marathon plans build in. The one rough edge is that two of the new demands arrive on weeks the mileage is already rising, so the harder work and the bigger weeks climb together rather than taking turns.
-
Prevention
Does the plan protect you from injury?
Partly. The load math is genuinely careful. The week-to-week climb stays gentle, the running never spikes into the danger zone, and the step-down weeks at weeks 5, 8, and 10 keep giving your legs a break. Hard days always sit between easy or recovery days too. The clear gap is strength. The book recommends strength work twice a week, but it never lands on a single day of the calendar, so the practice that best protects a runner from injury is left for you to carry over yourself.
-
Flexibility
What happens when you miss a day?
Very little adapts on its own. The six-day calendar is fixed, and every workout reads as equally required, so there is no signal for which session to keep when a week gets tight. That suits a runner who plans to hit everything and leaves a runner who cannot stuck. The advice for handling illness, travel, or a bad week lives in a chapter of Advanced Marathoning rather than on the schedule. Reading that chapter before week 1 is worth doing, so you have a plan ready the first time a week falls apart.
-
Readiness
Will the plan deliver race-day fitness?
This is where the plan is at its best, and it earns full marks. You rehearse race effort directly and often, holding goal marathon pace four times across the build, with the longest stretch running 12 continuous miles by week 6. The long run climbs to 21 miles in week 7 and meets 20 again three weeks out, so the distance feels familiar long before race day. The two-week wind-down then trims the miles while keeping one sharp session live, so you arrive rested without going flat. Few plans this short prepare you this completely.
-
Variety
Are the workouts varied enough?
Mostly, and the workout range is a real strength. You move through eight kinds of running across the cycle, from easy recovery and aerobic miles to marathon-pace runs, threshold runs, faster intervals, and tune-up races. The interval sessions keep changing shape across the weeks, so neither the legs nor the head go stale. The one thing short of full marks is that the exact paces are not printed on the schedule. They send you to the appendices in the Pfitzinger book, so the calendar alone does not give you the numbers to run by.
Plan Strengths
- You peak at 21 miles in week 7 and meet 20 miles three weeks out, so the distance isn't new on race day.
- Marathon pace appears four times, peaking at a continuous 12-mile block in week 6, so race pace sits in your legs by the start line.
- Your acute-to-chronic load never crests 1.22, well below the 1.5 injury-risk ceiling, so the build climbs without stacking risk.
- Every workout arrives fully prescribed: distance, internal segments, pace reference, recovery jog length. You never have to interpolate.
- You finish the taper sharp rather than flat because week 11 holds one VO2 max session and race week holds a 2-mile marathon-pace rehearsal.
- Interval formats rotate across five shapes (5x1200, 5x600, 5x1000, 3x1600, plus tune-up races), so neither legs nor head get stale across the build.
Weaknesses & gaps
- You get no strength work on the calendar, though the book recommends twice-weekly resistance training. You have to schedule and hold to it yourself.
- Nothing on the schedule tells you which session to cut when a week unravels, so every workout reads as equally non-negotiable.
- Week 6 stacks a novel VO2 max format on top of an 11% volume jump, the steepest single-week load rise of the build.
- Without appendix A from Advanced Marathoning, the workout-type tags on the calendar have no pace numbers attached.
- If illness, travel, or weather break a week, you make the reschedule call yourself with no on-calendar scaffolding.
- Warm-up drills and post-run mobility live off-calendar. You bring that practice with you or improvise.
What this plan does not give you
You will not find strength training on the calendar even though the book recommends two sessions a week, so the routine is yours to build and stick to. The schedule also assumes near-perfect adherence. If a week goes sideways for illness or travel, there is no guidance on which workout to cut first. A good default is to protect the long run and the next marathon-pace session, and drop the second hard day of the week. The pace numbers themselves live in the book's appendices, not on the schedule. You need a copy on hand to translate prescriptions like 'at 15K race pace' into a watch number. Warm-up drills and post-run mobility also live in the book rather than on the daily plan, and you bring that practice with you.
What the science supports
Long runs are essential for marathon
The long run is the spine of this build. Week 1 opens at 17 miles. The peak hits 21 miles in week 7, and you meet 20 miles again three weeks out from race day. Those long sessions stay at an easy aerobic effort, the slow steady hours that train your legs to last past the two-hour mark. Marathon resilience comes from time on feet, not from harder short sessions.
Toresdahl et al. 2021; Jones & Kirby 2025; Casado et al. 2019
Tapering improves race performance by 2-6%
The plan tapers over the final two weeks rather than three. Week 11 drops volume roughly a quarter from the peak while keeping one fast session live, a set of three one-mile reps at 5K race pace. Week 12 winds down further but includes a short dress rehearsal at marathon pace and a few short pickups. The volume cut is what restores your legs. The kept intensity is what keeps them sharp.
Polarized training beats threshold-dominated
About 83% of the weekly miles in this plan run at an easy aerobic effort. The remaining miles fall into two distinct hard buckets. One is marathon-pace and lactate-threshold work (running at the pace you could just hold for an hour). The other is shorter intervals at 5K race pace. That split, plenty of easy plus clearly hard, is the polarized shape research backs for trained marathoners over flat threshold grinding.
Stöggl & Sperlich 2014; Casado et al. 2022; Kenneally et al. 2017
Periodization beats constant-load training
The 12 weeks split into four clear phases. Weeks 1 through 3 build endurance. Weeks 4 and 5 add lactate-threshold work, sustained running at the pace you could hold for about an hour. Weeks 6 through 10 sharpen race preparation with faster intervals and tune-up races. Weeks 11 and 12 taper. Each phase shifts the emphasis rather than repeating the same week. That staged structure outperforms flat, constant-load training.
Bradbury et al. 2020; Tønnessen et al. 2014; Casado et al. 2022
Varied intensity beats steady moderate pace
The hard sessions in this plan rotate rather than repeat. The race-preparation phase cycles through five interval shapes. It opens with five 1,200-meter reps, then five 600s and five 1,000s. Another five 600s follow, and three 1,600s close the final hard week. Marathon-pace runs and lactate-threshold work fill the other hard slots. Easy mileage carries the volume, and the hard days bring real intensity changes instead of a single moderate gear week after week.
Stöggl & Sperlich 2014; Rosenblat et al. 2019; Casado et al. 2022
Train better with Buena Vida
Buena Vida Run Club members get access to a catalog of 250 training plans as part of their membership. Training with Buena Vida offers detailed daily workout notes, integrated nutrition, live voice coaching, weight loss plans, and easy calendar management for life's hiccups.
Try it FREE for 7 days!
Frequently asked questions
- Is Advanced Marathoning 12-Week, 55 to 70 mi/wk good for beginners?
- No. Advanced Marathoning 12-Week, 55 to 70 mi/wk is built for intermediate-level runners. A true beginner should start with a lower-mileage plan.
- How many days per week does Advanced Marathoning 12-Week, 55 to 70 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 12-Week, 55 to 70 mi/wk include a taper?
- Yes, the plan includes a taper into race week.
- What is the rubric grade for Advanced Marathoning 12-Week, 55 to 70 mi/wk?
- Advanced Marathoning 12-Week, 55 to 70 mi/wk grades C on the Buena Vida rubric.