Running Plan Review Buena Vida Run Club's 12-Week Sub-1:25 Half Marathon (6 days)
Plan at a Glance
69.7 miles in one week is marathon volume, and here it serves a race of 13.1. That gap is the whole idea. At 6:26/mile, a sub-1:25 half lasts well over an hour, and speed alone rarely decides it. What decides it is how little that pace costs you once the opening miles are behind you.
Most runners chasing this time already have the speed. They can hold goal pace for a few miles on fresh legs. The trouble starts late in the race, when the pace that felt smooth begins to take real effort. The answer here is volume with a purpose. You run goal pace often, in reps that grow from half a mile to a full mile. Most weeks also hold threshold, the effort you could hold for about an hour. Around those days sit easy miles, a Saturday long run that reaches 16 miles, and a Sunday run on tired legs behind it.
It asks for 6 days of running and 1 strength session each week, and it assumes you already run most days without strain. The hardest habit is restraint. Easy days have to stay truly easy, or the Tuesday and Thursday work starts to fray. Sleep becomes part of the training, not a reward for finishing it.
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.
Similar plans
Our Review
If you already run most days and want a whole half at ⟦hm:6:26⟧, the sixth day is the lever here. It buys a Sunday run on tired legs and weeks that climb from about 41 miles to 69.7. It costs you your days off, since Friday's strength session is the only break from running until race week. 12 weeks is short for that climb, so start fit.
What makes it work is how often you meet goal pace. Most Tuesdays bring reps at ⟦hm:6:26⟧ that grow from 6 × 0.5 mile to 6 × 1 mile, and one Thursday holds it for 4.4 unbroken miles. Other Thursdays carry threshold or a progression run that closes with 3.1 miles at goal pace. Everything around those days stays easy. By the taper the pace feels like a habit, and habit is what the late miles of a half test.
Saturday's long run reaches 16 miles 3 weeks out, with 10.5 more the next morning. That is more than a half needs, and more to recover from as the taper begins. Coming out of the cutback a month in, your week jumps from 39.5 to 53.4 miles and then 58.4. The race simulation debuts in that same rebound. Strides wait until the shake-out, so nothing before race week runs faster than threshold.
Run it if you already log about 40 miles across 6 days without strain. If you need a full rest day each week, a 5-day schedule will sit better. For that runner, this earns a strong recommendation.
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Structure
Does the plan build you up smartly?
Every phase sets up the one after it. A 2-week base fixes the weekly rhythm. Then 7 weeks of sharpening lengthen the reps from 0.5 mile to 1 mile and threshold from 3.7 to 5.7 miles. A cutback every fourth week lets your legs catch up before the next climb. Then the running drops 45% over 3 weeks while the goal-pace reps keep their full length.
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Prevention
Does the plan protect you from injury?
Mostly, with one stretch that needs care. Coming out of the cutback a month in, weekly running jumps from 39.5 to 53.4 miles and then to 58.4. The race simulation and 0.75-mile reps arrive in that same stretch. Shorten an easy run or two in those weeks if your legs stay heavy, and keep the hard sessions. Elsewhere no week rises more than 10% outside a rebound, and hard days never sit side by side.
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Flexibility
What happens when you miss a day?
In a week this full, a missed Monday or Wednesday costs almost nothing. The Tuesday reps, the Thursday session, and the Saturday long run carry the plan, so move an easy day before you drop one of those. When a week shrinks further, the Sunday run is the next to go. If illness takes several days, repeat the week rather than jumping ahead. What you won't find is a scaled-down start for a runner arriving well under 41 miles.
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Readiness
Will the plan deliver race-day fitness?
You'll reach the start ready for the pace, though the long run overshoots what a half asks. By then you'll have run ⟦hm:6:26⟧ in reps most weeks and held it for 4.4 unbroken miles. A 45% taper keeps the mile reps whole into race week, so the pace stays familiar while your legs freshen. The gap is the 16-mile long run 3 weeks out. Capping it at 14 and moving 2 miles to a weekday easy run keeps the week whole.
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Variety
Are the workouts varied enough?
Variety here comes from a few formats that keep changing shape. Reps move from 6 × 0.5 mile to 7 × 0.75 mile to 6 × 1 mile, and threshold stretches from 3.7 to 5.7 miles. A race simulation and a progression run break up the Thursday rotation. The weekend pairs a long run with a medium-long run, so even the easy miles come in different lengths. Fast, relaxed running is the one missing piece, since strides appear only on the shake-out.
Workouts
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Running most days of the week is its own skill, and the routine matters more than any single run right now. The weeks before this one built a floor, and from here the calendar asks for more. The harder days come early, before the legs know the pattern. Keep them controlled. Most runners at this level run the easy days too fast out of habit, because slow feels like wasted time. It isn't. Let the week feel smaller than it is, and save the effort for where it was asked.
M 6mi Easy Run
6 miles easy. The opening run of a big block often feels lighter than it should, because nothing has piled up yet. Use the fresh legs to find a truly easy rhythm instead of testing them. Tomorrow brings goal-pace reps, and they go better on legs that ran slow today.
Tu Intervals: 6×0.5mi @ ½ Marathon
Warm up 2 miles, run 6 × 0.5 mile at 6:26/mile with 400 m easy jogs between, and cool down 2 miles. This is the opening session of reps, so treat it as a rehearsal rather than a test. Half a mile at goal pace is short enough that the effort feels almost casual. That is the trap. Run rep 1 at exactly the pace you want, and let reps 5 and 6 show whether you held it or chased it. The jogs should feel genuinely easy.
W 6mi Easy Run
6 miles easy. The legs may carry a little of yesterday's reps, mostly in the opening mile. Let the pace be whatever easy is today, even if it looks slow on the watch. Tomorrow asks for threshold, and this run is how it arrives on fresh legs.
Th 6.7mi Threshold Run with 3.7mi @ Threshold
Warm up 1.5 miles, run 3.7 miles at threshold, and cool down 1.5 miles. The opening threshold run of the block is about finding the effort, not proving it. Threshold is one continuous block, so find the rhythm early and hold it without checking the watch every minute. The effort should creep up across the 3.7 miles while the pace stays put. Finishing with the sense that you could have held it a while longer means you ran it right.
F Strength Training
Sa 8mi Long Run
8 miles easy. The opening long run of a block this big can feel almost too short, and that is fine. Run it at the same effort as the weekday runs, not a notch quicker because the weekend feels like the time to push. Sunday brings another run on these legs, so finishing with plenty left is part of the job.
Su 5.5mi Medium-Long Run
5.5 miles easy, the day after the long run. The legs will feel yesterday in the opening mile or two. That heaviness is the point of the session: running easy on legs that are already tired. Keep the effort low and let the stiffness fade on its own.
The legs start to notice the rhythm now. A slight heaviness on the morning stairs, a stiffness that fades once the run gets going. That is what running most days feels like from the inside, and it is normal. Learn the difference between that general tiredness and anything that hurts in one spot. The general kind is training. Pain in one spot is a reason to ease off for a day, and easing off early costs far less than pushing through it later.
M 7mi Easy Run
7 miles easy. A Monday after a full weekend tends to start stiff and loosen slowly. Give it a couple of miles before deciding how the legs feel. If the pace drifts up in the back half, pull it back, because tomorrow has goal-pace reps.
Tu Intervals: 6×0.5mi @ ½ Marathon
Warm up 2 miles, then 6 × 0.5 mile at 6:26/mile with a 400 m jog after each, and 2 miles to cool down. These reps repeat on purpose. Goal pace becomes familiar through contact, and most runners notice it takes less attention to hold each time they meet it. Watch the jogs. If you need every step of the 400 m to recover from rep 3 onward, the reps are running quick, so ease the next one back to the pace.
W 7mi Easy Run
7 miles easy. The day between two harder sessions is the one most often run too fast. Keep it conversational from start to finish, even if the legs feel good after the reps. Thursday's threshold needs what you save here.
Th 6.9mi Threshold Run with 3.9mi @ Threshold
Warm up 1.5 miles, run 3.9 miles at threshold, and cool down 1.5 miles. A little more time at the same effort. Breathing should be steady and deep, with room for a short phrase but not a sentence. Late in the block the effort climbs, and the temptation is to push the pace to match it. Hold the pace and let the effort rise instead. Staying even while it gets harder is the skill race day leans on.
F Strength Training
Sa 9mi Long Run
9 miles easy. The long run is a step further than it has been, and the extra distance shows up in the closing miles more than the early ones. Keep the effort even, and let the pace slow a touch if the legs ask. Easy on a long run means the same easy as Monday. Another run follows tomorrow, so there is nothing to gain by finishing fast.
Su 6mi Medium-Long Run
6 miles easy on legs that ran long yesterday. The pace will look slow for the effort, and that is normal on a Sunday like this. Most runners find the stiffness lifts somewhere in the middle. Keep the stride short and the effort soft until it does.
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Plan Strengths
- You'll know ⟦hm:6:26⟧ by feel, after reps nearly every week that stretch from 6 × 0.5 mile to 6 × 1 mile.
- Holding goal pace for 4.4 unbroken miles midway through the build makes the middle of the race feel like ground you've covered.
- Sunday runs on legs still tired from Saturday show you what the closing miles of a half ask, long before race day.
- Picture race week with all 6 mile repeats still on the calendar, and the pace feeling routine rather than new.
- A cutback every fourth week gives heavy legs room to come back before the running climbs again.
Weaknesses & Gaps
- More fatigue than a half needs comes from the 16-mile long run 3 weeks out, with 10.5 miles more the next morning.
- Your legs take a real hit coming out of the cutback a month in, as weekly running jumps from 39.5 to 53.4 miles.
- 2 new demands collide in that rebound, since the 4.4-mile race simulation debuts in the same week the running jumps.
- Leg speed above threshold gets almost no practice, because strides appear only on the race-week shake-out.
- You're on your own for the Friday strength session, which sits on the calendar each week with nothing inside it.
- No full day off until race week means a tired or busy stretch leaves nowhere to rest without losing a run.
What's missing
Most of what's missing is simple to add yourself. Put 4 to 6 strides on the end of a Monday or Wednesday easy run each build week, so fast running isn't new on the shake-out. Coming out of the cutback a month in, trim about 3 miles from the easy days so the climb is gentler. Treat the 4.4-mile race simulation in that stretch as practice rather than a test. Cap the 16-mile long run at 14 and add those 2 miles to a weekday easy run, which keeps the weekly total while sparing your legs before the taper. For the Friday strength session, bring a routine you already trust or get one from a coach. If you arrive well under 41 miles a week, spend a few weeks building first before you take on the plan.
What the science supports
Training in phases beats holding one load
Plans that move through phases, from base to build to taper, tend to beat plans that hold the same mix of running all the way through. For trained runners racing a set goal, race-pace results improve by about 1% to 3%. Here the phases are easy to see. A 2-week base sets the rhythm, 7 weeks of sharpening lengthen the goal-pace reps, and a 3-week taper brings the running down before race day.
Bradbury et al. 2020; Tønnessen et al. 2014; Casado et al. 2022
Recovery weeks turn training into fitness
A lighter week every third or fourth week lets built-up tiredness clear. The body can then absorb the work before the next climb. In one trial, recreational runners who took a cutback week trained better and stayed healthier than those who kept adding miles. This plan drops the running by about a fifth after each 3-week climb, from 48.6 to 39.5 miles and later from 63.8 to 52.
Race-pace training pays off near your threshold
Running at goal pace pays off most when that pace sits near threshold, the point where easy effort turns hard. For a runner fast enough for ⟦hm:6:26⟧, half-marathon pace sits close to that line. Studies find that training right at threshold lifts it by 10% to 15% in 8 to 12 weeks. The reps at ⟦hm:6:26⟧, the Thursday threshold runs, and the 4.4-mile race simulation all work that same narrow band of effort.
Pierce et al. 1990; Hewson & Hopkins 1996; Jones et al. 2021
A taper makes you 2-6% faster on race day
Cutting back for 1 to 3 weeks before a goal race tends to make trained runners 2% to 6% faster than holding their training steady. The tapers that work best cut running by roughly 40% to 60% while keeping some speed in the legs. This plan trims about 45% from the 69.7-mile high point to race week. The 6 × 1 mile reps stay at full length through all of it.
Higher weekly mileage lowers injury risk
Higher weekly mileage, built up gradually, is linked to fewer injuries rather than more. One large study of runners' watch data found that people running under about 15 miles a week got hurt more often, and risk leveled off as running rose. This plan starts near 41 miles and rises no more than 10% a week outside the rebound after each cutback. That gradual climb is part of what makes a 69.7-mile week reachable.
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