Running Plan Review Buena Vida Run Club's 12-Week Sub-1:45 Half Marathon (5 days)
Who’s behind this review? Buena Vida is a running app made by David Cole, a Seattle runner & triathlete who led design and research for Amazon’s Halo fitness band. This is one of Buena Vida’s own plans, so we have an obvious interest in how it compares. It’s scored on the same 30 measures as every plan we review, each tied to published research, and its weaknesses are published below. AI does the first scoring and draft, then every claim is checked against its studies. No plan author pays to be reviewed, and we run no ads. See a mistake? Email David at corrections@buenavida.run · How we score →
Plan at a Glance
Your halves probably come out within a minute or two of each other, and the time leaks out in the same place: the last 3 miles, when the pace you held without thinking starts asking for something your legs don't have. Every weekend in this plan is aimed at that stretch.
You may be used to a weekend that ends with a day off, because the day after the long run is for rest. Here Sunday is a medium-long run at the pace you can talk at, on legs that still remember Saturday. The first couple of miles feel heavy. There's a pull to cut it short, and a pull to push it into a moderate clip just to get it over with. Do neither. Keep it conversational and the heaviness lifts, and what you're practicing is the closest training gets to the end of a half marathon.
That Sunday sets up the rest of the week. Monday stays easy. Tuesday, in every build week, is goal pace: a handful of half-mile reps at first, growing until goal pace is something you hold for miles at a time. Not faster than goal pace. The plan teaches you one pace until it feels like yours. Thursday is a tempo at threshold effort, a notch harder, and a different kind of training from goal pace. If Sunday drifts moderate, Tuesday turns into a grind and the whole week slides toward the gray middle. If Sunday stays easy, Tuesday comes out clean.
Every few weeks a lighter week lets the work settle. The biggest week brings your longest run, with goal pace tucked into its middle, and then the volume comes off so race week is light. It assumes about 30 miles a week is already routine for you, with a couple of harder sessions in the mix. Wednesdays are for strength and Fridays for rest, right up until race week.
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Our Review
Maybe your recent halves keep coming out the same, and sub-1:45 is the next number. If you already run close to 30 miles a week, this 5-day build is a strong bet for that goal, and it aims straight at the last 3 miles of the race. Goal pace grows on Tuesdays from short reps into miles at a time, a threshold tempo on Thursday adds a different kind of work, and the weekend asks you to run again on Sunday after a long Saturday. The structure around that work is sound, and by the end the volume falls so far that race week, before the race itself, adds up to less than one long run from the peak week. The gaps are small and sit in the plan's two heaviest moments: the first week back from the first cutback, and the peak week, which brings a new kind of session and the longest run together. Respect those two weeks and run it.
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Structure
Does the plan build you up smartly?
Soundly, with one thing missing. The calendar names each phase and explains it, from 2 weeks of base into a long sharpening block. What's missing is a change of focus along the way. Goal-pace reps and threshold tempo carry the hard days from the first week through the tenth, and no earlier block is given over to building something else. Session by session, the plan leaves nothing to interpret.
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Prevention
Does the plan protect you from injury?
Firmly. Most of your running is easy, Tuesday's reps never sit next to Thursday's tempo, and all 20 hard sessions begin with an easy warm-up. The one modest gap is the first week back from the first cutback. Set against the few weeks before it (the cutback plus the two build weeks ahead of it), that week asks clearly more than your body has been averaging. Sudden jumps in load tend to raise injury risk, and tendons and bone usually take longer to catch up than your breathing does, so feeling ready isn't proof you are. Keep that week's easy runs genuinely conversational. If a new ache from week 5 is still there by Thursday's tempo, take a few easy days rather than run through it.
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Flexibility
What happens when you miss a day?
Very little, if you let it go. The week has slack built in: Friday is a rest day until race week, Wednesday is strength, and the two hard sessions sit 2 days apart, so no single run carries the plan. Of the 5 runs in a build week, the plan ranks Saturday's long run and the Tuesday and Thursday sessions highest. Miss a Monday easy run and simply skip it. Miss Tuesday and don't cram it into Wednesday ahead of Thursday's tempo. Either let it go or run it in place of the tempo, so the week still has one clean hard day. If a weekend breaks, run the long run on whichever day you have and drop the medium-long. Lose most of a week to illness and rejoin at the easy runs. A cutback is never more than a few weeks away.
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Readiness
Will the plan deliver race-day fitness?
If your last half came apart in the final 3 miles, this plan aims squarely at that stretch. Tuesday goal-pace reps start at 4 × 0.5 mile and top out at 8 × 1 mile. The peak week adds 6 unbroken miles at goal pace, then 3 more in the middle of a 15-mile long run, and by Sunday evening you've covered 25.5 miles across two days. By race day, goal pace is something you've held on tired legs many times, not something you're hoping will hold. The Thursday tempos sit at threshold, a little harder than goal pace, so the week trains at race pace and just above it. Neither goal-pace work nor threshold work has been shown to beat the other for runners at this level, so carrying both is a reasonable way to prepare. Then volume comes off, from about 52 miles to 47 and then 32, while short goal-pace touches stay in. A taper shaped like this beats holding training steady when race day comes.
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Variety
Are the workouts varied enough?
Pointed variety, not variety for its own sake. Around the easy, long and medium-long runs, the hard days rotate through threshold tempos, interval sets and a continuous pace run, and the intervals change shape almost every week: half-mile reps, then three-quarter-mile reps, then full miles. What stays constant is the target. Most of the quality running is at goal pace, with the tempo supplying the harder edge. Each Tuesday looks a little different, and each one asks your legs the same question. It's a plan about learning one pace thoroughly, and it keeps that lesson from going stale by changing how you meet it.
Workouts
Every Buena Vida training plan comes with detailed coaching notes and live workout guidance. Tap any workout to preview the notes for that day.
Everything from here is a sequence of ordinary weeks until, somewhere in the back half, they stop being ordinary. The opening block exists to set a baseline rather than a benchmark, so let the week feel manageable on purpose. You've targeted a serious half-marathon time, and the work that gets you there is mostly patient on the front end. Most runners feel a small urge to prove something in the opening days. Let it pass. Beginnings deserve marking, even the ones with nothing to show yet.
M 5.5mi Easy Run
5.5 miles easy, your first run on this plan. Hold it at a pace where a full sentence comes out without breaks. The early easy miles are the foundation everything else rests on. Keep them slow on purpose.
Tu Intervals: 4×0.5mi @ ½ Marathon
2-mile warmup, then 4 × 0.5 mile at goal half marathon pace (7:57/mile) with a 400 m recovery jog between, then a 2-mile cooldown. First harder session of the plan. Hit goal pace. Faster will only cost you the rep that comes after. The reps should feel controlled. You'll know you nailed the workout if the fourth rep feels like the first. Repeats break hard running into pieces the body can absorb, building speed without breaking form. Run the first rep like you plan to enjoy the last one.
W Strength Training
Th 5mi Tempo Run with 3mi @ Tempo
1-mile warmup, then 3.0 miles at threshold (a comfortably hard effort you could hold for about an hour), then a 1-mile cooldown. Your first tempo of the plan. Find the ceiling of what stays in control. If breathing breaks rhythm, you're past it. Sustained efforts like this are practice at holding a firm pace with breathing quick but even. Comfortably hard means a few words at a time, never full sentences. The session was a success if the final stretch held pace without the form unraveling.
F Rest
Sa 8mi Long Run
8 miles easy, all aerobic, and the first long run of the plan. The pace doesn't matter. The duration on your feet is what matters. After today the long runs grow. Today is the floor they're growing from. The long run climbs from 8 to 15 miles across the build. Run it conversational from the first mile, and let the last mile prove the pacing.
Su 5.5mi Medium-Long Run
5.5 miles easy on the back of yesterday's long. Your legs will feel like they ran 8 miles yesterday because they did. The point isn't to recover from Saturday. It's to learn what running on tired legs feels like. Keep the pace conversational and notice how the back half of this run feels.
The middle stretches of a build are where most of the actual race fitness gets made, even though the weeks look indistinguishable from each other on paper. Right now you're stacking days, watching the easy runs settle into something more controlled than they were when you started, noticing where your breathing finds its level. None of it is dramatic. None of it needs to be. Goal times at this distance get built in exactly these weeks, in the steady showing up that doesn't feel like much from the inside.
M 6mi Easy Run
The day after a harder session is the day to keep effort genuinely low. The aerobic system absorbs Tuesday's work in the background while you run easy here.
Tu Intervals: 5×0.5mi @ ½ Marathon
2-mile warmup, then 5 × 0.5 mile at goal pace with 400 m of easy jogging between, then a 2-mile cooldown. One more rep than the 4 × 0.5 mile session. The session grows by reps while pace holds. Goal-pace memory is what's growing underneath. The rest between reps is what lets the work stay fast from first to last. Each rep is a controlled visit to a pace the body is learning to call normal. Aim for even efforts across the set rather than a fast opener. The workout was perfect if the last rep matched the first in pace and form.
W Strength Training
Th 6.2mi Tempo Run with 3.2mi @ Tempo
1.5-mile warmup, then 3.2 miles at threshold, then a 1.5-mile cooldown. Slightly longer than the 3-mile tempo. The same effort, held a few minutes longer. This session is steady, comfortably hard running, held without surging. The sustained stretch builds the strength to stay smooth when the effort gets uncomfortable. Ease into the effort over the first few minutes rather than hitting it flat out from the start. If you finished able to imagine one more mile, the effort was judged right.
F Rest
Sa 9mi Long Run
9 miles easy. Long-run growth is gradual on purpose: the cardiovascular system gets stronger faster than tendons and fascia do, and the slower piece is what sets the safe pace of the climb.
Su 6mi Medium-Long Run
6 miles at conversational pace. The medium-long run is the engine of this plan. Treat it as the workout it is and skip the recovery-jog mindset. The legs should feel slightly heavy at the start from the prior day's volume, and that heaviness is exactly what the run is for.
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Plan Strengths
- Goal-pace work grows steadily from 4 × 0.5 mile to 8 × 1 mile and a 6-mile continuous run, so race pace becomes familiar rather than hoped for.
- Thursday threshold tempos run a notch harder than goal pace, adding a second kind of hard work beside the Tuesday reps.
- Peak volume of about 52 miles and a 15-mile longest run give the distance what it needs, while the large majority of the running stays easy.
- The taper trims volume over the last 3 weeks and keeps short goal-pace touches in.
- Each Tuesday and Thursday session is fully written out and carries a note on what it's for.
Weaknesses & Gaps
- The first week back from the first cutback climbs well above what the previous few weeks averaged.
- The peak week brings the first continuous goal-pace run alongside the plan's biggest volume. If you want to soften it, run the 6 goal-pace miles as 2 × 3 miles with a short jog between.
- The long run moves in uneven steps, reaching 15 miles straight out of a 10-mile cutback week, 3 weeks before race week.
What's missing
Three optional additions fit this plan without changing its shape. Strides show up only in race week. Once the opening two weeks are done, add 4 to 6 relaxed 20-second strides at the end of a Monday easy run. They cost almost nothing and remind your legs every week what running quick feels like. There's no dedicated hill work, so if your race course rolls, run a couple of Monday easy runs on rolling ground rather than adding a new session. And there's no tune-up race. If you want one, enter a Sunday 10K midway through the build in place of the medium-long, and run it at goal half-marathon effort on Saturday-tired legs, as pacing practice rather than a fitness test.
What the science supports
Shifting training emphasis beats unchanging training
The plan divides into 4 distinct phases. Base Building runs weeks 1 and 2 to establish the 5-day rhythm and back-to-back weekend. Sharpen runs weeks 3 through 10, growing goal-pace intervals from half-mile reps to mile reps while volume climbs to its week 9 peak, with cutbacks at weeks 4 and 8. Taper occupies week 11, dropping volume while holding intensity. Race week is light and sharp. Planned shifts like these tend to beat flat, unchanging training, though the gain measured in trials was small.
Filipas et al. 2021; Bradbury et al. 2020; Sandbakk et al. 2025
A real taper sharpens you for race day
Week 11 drops to 31.6 miles, about 40 percent under the 52.3-mile peak in week 9, and race week runs 14.9 miles before the race. Goal-pace efforts and threshold work stay: a 3-mile goal-pace run and a 2.6-mile tempo in week 11, then 3 × 1 mile and a 2.4-mile tempo in race week. Trimming volume 40 to 60 percent and keeping some speed in the legs improves race performance compared with holding training steady.
Keep easy days easy, hard days hard
Monday's easy run, Saturday's long run and Sunday's medium-long carry most of the week's miles at conversational effort. Two hard sessions, goal-pace intervals on Tuesday and a threshold tempo on Thursday, sit a day apart with strength on Wednesday between them. Threshold is comfortably hard, an effort you could hold for about an hour. About 80 percent of the running is easy. Keeping most running easy and the rest truly hard may help trained runners improve more than a steady diet of medium effort.
Stöggl & Sperlich 2014; Casado et al. 2022; Kenneally et al. 2018
Consistent mileage is linked to fewer injuries
Weekly volume climbs from 31 miles in week 1 to a 52.3-mile peak in week 9. Cutbacks at weeks 4, 8 and 11 each drop volume by roughly a third. Each one gives the body some relief before the next block opens. Higher weekly mileage, built up gradually like this, is generally linked to fewer injuries rather than more. The evidence is observational, and not every study agrees.
Strength training lowers injury risk
A strength session sits on every Wednesday from week 1 through week 11, between Tuesday's intervals and Thursday's tempo, and drops out only in race week. Across sports, strength training lowers injury risk substantially, more than stretching or balance work alone, and more of it goes with fewer injuries. Across 25 trials, injuries fell to about a third of the rate without it. The evidence for runners specifically is more mixed, so treat the slot as part of the plan through the 52.3-mile peak week.
Lauersen et al. 2014; Lauersen et al. 2018; Brunner et al. 2019
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