Running Plan Review Buena Vida Run Club's 12-Week Sub-1:45 Half Marathon (4 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
A sub-1:45 half marathon is one pace, held for 13.1 miles. You need the fitness to run it, and you need the skill of finding that pace in the first mile and still owning it in the twelfth. This plan trains both, in 4 running days a week.
The week has a shape you'll learn quickly. Tuesday is goal pace. The reps start as half-mile pieces, stretch to three-quarter miles, then to full miles, and late in the build they join into one long, unbroken run at goal pace. They never go faster than goal pace. That surprises most runners, who expect speed work to feel like speed. Here the reps teach restraint: the first one at the pace you'll race, and the last one matching it. Thursday is a tempo at threshold, comfortably hard, the effort where you can speak only in short fragments. It sits a notch quicker than goal pace and grows through the build, a different kind of work from the Tuesday reps.
The weekend carries the miles. A long run on Saturday, then a medium-long run on Sunday on legs that remember Saturday. Most weeks have no short easy jog at all. The easy running lives in the weekend and in the warm-ups and cool-downs around the fast work, so the patience this plan asks for is mostly a weekend patience: conversational on Saturday, slower still on Sunday.
The long run climbs past race distance once. That run is 6 easy miles, 3 at goal pace, then 6 more, so you find goal pace inside real fatigue before race day asks you to. Three lighter weeks interrupt the climb to a 45-mile peak, and the taper keeps a short dose of goal pace in every week while the miles fall away. Monday and Wednesday hold strength sessions.
It's built for runners already running 4 days and about 27 miles a week without strain. If that's you, it asks one thing above the rest. Run goal pace as goal pace, every time you meet it.
What follows is our full review of the plan. Buena Vida grades every plan on the same detailed, 30-point benchmark. Each measure comes from peer-reviewed sports-science research and proven coaching best practices.
Similar plans
Our Review
For a sub-1:45 half this plan earns trust quickly, because all 4 running days point at the same race. It works on goal pace from two sides. Tuesday rehearses it, first in reps and later in one unbroken run. Thursday's threshold tempo runs a notch faster, so you spend time just above it too. No study shows one of those kinds of work beats the other, so carrying both is a sound way to cover the race. The structure around it is sound: clear phases, three lighter weeks, hard days kept apart and a real taper. What it asks of you is mostly patience. Four-day runners tend to run everything at the same medium effort and check the watch too often, and this plan works best when Tuesday's first rep is no faster than its last and Sunday's run, on legs heavy from Saturday, is allowed to be slow. The gaps are small and sit in two weeks. Week 5 is the first big step in load. Week 9 is the biggest week and brings several firsts at once. Know they're coming, run them with care, and run everything else as written.
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Structure
Does the plan build you up smartly?
For the most part, though the hard work stays the same kind all the way through. The calendar names its phases and explains them, opening with 2 weeks of base building before 7 weeks of sharpening. Goal-pace reps and Thursday's tempo carry every build week from the first to the tenth. Reps get more numerous, then longer, then continuous, and the tempo lengthens alongside them, so each week asks a little more of something you've already met. Every one of those sessions is written out in full, warm-up to cool-down.
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Prevention
Does the plan protect you from injury?
By keeping Tuesday and Thursday apart and most of the other running easy. Wednesday's strength session always sits between the two hard runs, and every one of them opens with a proper warm-up. Two weeks deserve extra care. Week 5 brings longer reps, a longer tempo and the longest long run yet, all at once, and it jumps well above the weeks before it. Sudden jumps in running tend to raise injury risk, so treat any ache that lingers that week as a real signal. Runners often notice a niggle like that before something bigger sets in, and easing off for a few days is a sensible precaution. Week 9 is the plan's biggest week, and it's also where the 6-mile goal-pace run first appears, alongside the longest tempo and the longest long run. It comes straight after a lighter week. If Tuesday leaves you flat, shorten Sunday's 10.5 miles before any other run. By mile 5 that Sunday your legs will feel the whole week, and the right answer is slower, not harder.
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Flexibility
What happens when you miss a day?
The plan gives you a clear order of what matters. In a build week such as week 6, the three runs to protect are Tuesday's 7 reps at goal pace, Thursday's tempo and Saturday's 12.5-miler. Sunday's medium-long comes next, and the strength sessions come last. Friday is open in every week but the last, which makes it your buffer. Miss Tuesday, and you can run it Wednesday with the tempo moved to Friday, or simply let it go and keep Thursday as planned. In a week when Saturday's long run carries goal-pace miles, letting it go is the better choice, since a Friday tempo would sit right before them. Miss the long run, and run it Sunday in place of the medium-long rather than doing both. Miss a whole week to illness or travel, and pick the plan back up where it is rather than squeezing the missed work in. The one move to avoid is stacking fast running on consecutive days to catch up.
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Readiness
Will the plan deliver race-day fitness?
From several angles at once. Weekly running peaks at 45 miles, plenty for the distance. The long run reaches 15 miles, past race distance. Goal pace shows up in three shapes: reps that grow to full miles, 6 unbroken miles at goal pace, and 3 goal-pace miles in the middle of the 15-miler, where fatigue is already real. Cutting back before a goal race improves performance compared with holding training steady, and this taper takes weekly running from 45 miles to about 39, then 27, then about 10 in race week before the race itself, with short goal-pace touches kept in each week. The one soft spot is the long run's route to its peak. It jumps from a 10-mile cutback straight to 15, three weeks before the race. If the 13-miler before that cutback felt like a grind, 14 is a perfectly good peak.
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Variety
Are the workouts varied enough?
A wide mix, all of it aimed at race day. Across the plan you'll run easy runs, long runs, medium-long runs, interval sessions, tempo runs, a continuous goal-pace run and the race itself, plus strides in race week. The goal-pace work alone comes in many formats, from quarter-mile reps to mile repeats to a single 6-mile block, so the same pace keeps meeting you in new shapes. Tuesday's reps and Thursday's tempo each carry a note on what the session is for and how to tell it went well, which makes each one easier to run with intent.
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.
Welcome to the plan, with 11 weeks between you and race day. These opening days are a calibration, nothing more, and the legs are not the thing being measured yet. What you are doing across these days is setting a floor for the work to come, both physiologically and in terms of attention. The aerobic system gets its first signal, the connective tissues their first nudge, and your nervous system its first introduction to the kind of effort you have decided to chase. Stay patient with how ordinary this stretch will feel. Consistency, not heroics, is what earns the back half of this block.
M Strength Training
Tu Intervals: 4×0.5mi @ ½ Marathon
First interval session of the plan. Warm up 2 miles, run 4 x 0.5 mile at half-marathon goal pace with 400 m recovery jogs, and cool down 2 miles. The reps are at goal pace, not faster. Holding back is the lesson here. Hit the first rep on pace and hold the same effort across all four. Most runners want to push the last rep. Resist. The workout teaches discipline before it teaches speed. The workout was perfect if the last rep matched the first in pace and form.
W Strength Training
Th 6.4mi Tempo Run with 3.4mi @ Tempo
First threshold tempo. 1.5 miles warmup, 3.4 miles at threshold, 1.5 miles cooldown. Threshold sits 25 to 30 seconds per mile faster than goal pace. It's comfortably hard. You can speak in short fragments only. If you've never run a tempo before, the first half-mile feels harder than it should. Then it settles. Trust the settling. Sustained efforts like this are practice at holding a firm pace with breathing quick but even. The session was a success if the final stretch held pace without the form unraveling.
F Rest
Sa 8mi Long Run
First long run of the cycle. Start slower than feels natural. 8 easy miles at conversational pace. You should be able to talk in full sentences the whole way. The long run's job at this stage is just minutes running at aerobic effort. No fast finishes, no surges. The long run climbs from here to 15 miles by week 9.
Su 5.5mi Medium-Long Run
5.5 miles medium-long, the day after the long run. The legs will feel Saturday's work, and that feeling is exactly what the run is meant to train. Keep the pace easy. Let the legs work through stiffness rather than around it. Sessions like this teach the legs to keep moving while tired.
The legs may carry a low-grade heaviness through this stretch, and that signal is exactly what you want to be feeling right now. Your heart and lungs are starting to catch up with the running, and the tendons are remembering what repeated impact asks of them. None of it is visible from the outside, and none of it should be impressive on paper. What starts changing now is the ground the back half of the plan stands on. Stay patient with the easy days and let them do their work.
M Strength Training
Tu Intervals: 5×0.5mi @ ½ Marathon
Intervals grow to 5 reps. 2-mile warmup, 5 x 0.5 mile at half-marathon goal pace with 400 m recovery, 2-mile cooldown. The fifth rep is the new one. If it pulls slower or harder, the first four were too fast. Goal pace is goal pace from rep 1. 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. If form held to the final rep, the session did its work.
W Strength Training
Th 4.5mi Easy Run
Easy 4.5 miles at conversational effort. The body doesn't get faster from hard days alone. It gets faster from hard days the body can recover from. Today is the recovery that lets the next harder session go well. Run by feel, not pace. The legs will tell you the right speed.
F Rest
Sa 9mi Long Run
9 miles long. Still aerobic, still conversational. Most runners notice an ease creeping in around mile 5 that wasn't there last Saturday. That's the training settling in early. Don't translate the ease into faster pace.
Su 6mi Medium-Long Run
6 miles medium-long. The legs carry more cumulative work than last Sunday. Run by feel. If the pace creeps slower than usual, that's the legs doing the right thing. The long run stretches endurance by keeping you out there longer, not by going faster.
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All 12 weeks in the app
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Plan Strengths
- By race day, goal pace is a pace you've already held for miles at a time, including on tired legs.
- A threshold tempo each Thursday, a step above race pace, covers the faster side of goal pace while Tuesday rehearses the pace itself.
- Three lighter weeks break up the build, and a real taper steps the running down over the last 3 weeks.
- Back-to-back weekend runs give you practice on tired legs without asking for a fifth running day.
Weaknesses & Gaps
- Week 5 brings longer reps, a longer tempo and the longest long run yet all at once, a jump well above the weeks before it.
- The first 6-mile continuous goal-pace run lands in week 9, the plan's biggest week, alongside its longest tempo and longest long run.
- The long run reaches its peak in one big step, from a 10-mile cutback week straight to 15 miles.
What's missing
Strides show up only in race week, and they're a cheap addition sooner. Try 4 to 6 relaxed 20-second pickups after Tuesday's cool-down or after the easy runs in the lighter weeks. They cost almost nothing and give your legs a regular taste of running fast. There's no tune-up race. You don't need one, since the 6-mile goal-pace run already works as a dress rehearsal, but if you'd like the feel of a start line, a 5K or 10K on a lighter weekend makes good pacing practice, run at race effort and treated as practice rather than as a fitness boost. There's no hill work either. If your race course rolls, run part of a few Saturday long runs on rolling ground so the climbs on race day feel familiar.
What the science supports
Shifting training emphasis beats unchanging training
Shifting the emphasis of training as a race approaches tends to beat running the same mix throughout, and top coaches move toward race-specific work late in a build. Here the 12 weeks run through named phases: Base Building in weeks 1 and 2, Sharpen from week 3 to week 9, then Taper and Race Week. Intervals grow from short reps to mile reps, tempos climb from 3.4 to 5.6 miles, and the long run builds to 15 miles before the taper pulls it back.
Filipas et al. 2021; Bradbury et al. 2020; Sandbakk et al. 2025
Keep easy days easy, hard days hard
Tuesday carries interval work at goal pace. Thursday holds a tempo run at threshold, a comfortably hard effort you could sustain for about an hour. Monday and Wednesday hold strength and Friday is a rest day, so the two hard runs never land on back-to-back days. Easy running makes up about 78 percent of the mileage. Trained runners may improve more by keeping easy days truly easy and saving hard effort for a few clear sessions than by settling into medium effort every day.
Stöggl & Sperlich 2014; Casado et al. 2022; Kenneally et al. 2018
A real taper sharpens you for race day
The taper steps volume down from the 45.1-mile peak in week 9 to 38.9 miles, then 27.4, then 10.2 in race week before the race itself. Goal pace stays in every one of those weeks: 6 × 1 mile in week 10, a 3-mile goal-pace run in week 11 and 6 × 400 m in race week. Cutting volume 40 to 60 percent over the last week or two while keeping some speed improves race performance compared with holding training steady.
Mix easy and hard instead of steady medium
Your harder work mixes three forms: 8 interval sessions at goal pace, from quarter-mile reps to full miles, 8 threshold tempos growing from 3.4 to 5.6 miles, and 2 continuous goal-pace runs of 6 and 3 miles. Short repeats with recovery, sustained comfortably hard running and unbroken goal pace each load the body differently. Mixing easy days with clearly hard work may build endurance better than steady medium-hard running. The edge in recent reviews is small, and it shows up more in the lab than in race times.
Stöggl & Sperlich 2014; Rosenblat et al. 2019; Casado et al. 2022
Longer long runs go with faster marathons
The Saturday long run climbs from 8 to 15 miles, so from week 5 on most runners chasing 1:45 spend well over 90 minutes on their feet. Marathoners who run longer long runs tend to finish faster, though that is an association, and no study has tested whether shorter, faster sessions could do the same job. The finding is strongest for marathoners and matters less at this distance, but the 15-miler in week 9, followed by 10.5 miles on Sunday, leaves 13.1 well inside what training has covered.
Doherty et al. 2020; Fokkema et al. 2020; Toresdahl et al. 2022
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