Running Plan Review Buena Vida Run Club's 16-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 isn't mostly a question of speed. Most runners chasing it can already run goal pace. What they can't do yet is hold it once they're tired, deep into the race, where the pace stops feeling like theirs. Two weekday sessions and a back-to-back weekend go after that gap.
Goal pace comes back almost every Tuesday. It starts as a handful of half-mile repeats with easy jogs between, enough to learn the feel on fresh legs. The reps grow to a full mile, the count climbs to 8, and then the jogs disappear and the pace runs unbroken for 7 miles. Thursday does a different job. The tempo there is threshold effort, a notch harder than goal pace, and it gets longer almost every block. Tuesday makes the pace familiar. Thursday is a different kind of training, at the effort you could race for about an hour.
The weekend is where most runners will have to unlearn something. The usual habit is to rest the day after a long run. Here the day off is Friday, before the weekend, and Sunday is a medium-long run on Saturday's legs. Those Sunday legs are the legs of the race's final miles, and you'll meet them most weekends before you meet them on race day. Run Sunday slower than feels respectable. If it drifts toward goal pace because the legs warmed up fine, you've added a third hard day to the week, and Tuesday's reps turn into survival.
Four days is enough for this goal because each day has one job: pace on Tuesday, threshold on Thursday, endurance across the weekend, with strength on Monday and Wednesday. What it asks in return is your Saturday and Sunday mornings, and long ones. Come in running about 25 miles a week across 4 days, enough that an 8-mile Saturday already feels routine. The plan runs three build-and-cutback cycles rather than two, which buys more Tuesdays at goal pace and more weekends for the long run to grow, then tapers with the goal-pace session still in place, so race day is a pace you've run many times.
Below is Buena Vida's full review of the plan. We score every plan against our detailed, 30-point benchmark. Each measure is drawn from peer-reviewed sports-science research and proven coaching best practices.
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Our Review
A half under 1:45 on 4 running days leaves little room for wasted sessions. This race plan has one clear idea and the discipline to stick to it. Tuesdays rehearse goal pace until it's ordinary, and Thursdays train threshold as a second, steadier kind of hard running. Around those two days, Friday stays free ahead of a weekend of longer running. Weeks 4, 8 and 12 drop back to give your legs a breather before the next climb. The extra length goes into a third build cycle, which means more goal-pace sessions and a long run that has time to grow, and the 4-day shape suits a runner with two good weekday slots and a free weekend. The gaps are small. The first week of the main build is the steepest climb in load anywhere in the plan, and the long run grows in a few big steps rather than an even ramp. Take that first big week carefully and give the plan your weekends, and it is a well-built path to sub-1:45.
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Structure
Does the plan build you up smartly?
Yes, with one gap: the kind of hard work stays the same from start to finish. Goal pace on Tuesday and threshold on Thursday carry the whole build, with no block that turns the emphasis toward something new. Instead, Tuesday's reps get longer before they get continuous, and Thursday's tempo adds a little most weeks. Every hard session is written out in full, with a note on what it's for. The phases are named on the calendar, so you always know where you are.
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Prevention
Does the plan protect you from injury?
The shape of the week does most of the protecting. About three quarters of the miles are easy, which leaves Tuesday and Thursday fresh enough to be genuinely hard. Wednesday's strength day sits between them, and all 25 hard sessions open with 1 to 2.5 easy miles. Every fourth week is lighter, and each block after it starts a little higher, so your mileage climbs in steps. The week that asks the most is the first week of the main build. It's a bigger step than anything in the base weeks: the long run passes 10 miles for the first time while the Tuesday reps stretch to three-quarter miles and the tempo gets longer, all together. Weekly miles go from 21 to about 34 coming out of the lighter week, so treat it as a go-carefully week. If anything starts to ache, run Sunday shorter and slower and let it settle before Tuesday.
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Flexibility
What happens when you miss a day?
Because its days come in a clear order of importance, this plan bends without breaking. In every building week, Tuesday, Thursday and Saturday are the core, Sunday comes next and strength comes last. In the cutback weeks, Saturday's long run is the one to protect. Friday is open until race week, which gives you a spare day to move things. If you miss Tuesday, run it Wednesday and make Thursday an easy run, so two hard days never land together. If you lose Saturday, run the long run on Sunday and skip the medium-long rather than stacking both. Most Tuesday formats repeat, so a missed session usually comes around again. The exception is the biggest week, which holds the 15-mile long run and the 7-mile goal-pace run. Guard that week, and if life takes it from you, let it go rather than squeezing it into the taper.
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Readiness
Will the plan deliver race-day fitness?
The race work builds steadily toward one decisive week near the peak. The mileage peaks in the mid 40s, which is plenty for a half marathon at this goal. By week 10 the long run is 13 miles at easy effort, a step short of the race, and the next week it goes past the race distance to 14. The 15-miler that follows has 3 miles of goal pace in the middle, so you find the pace on legs that have already run 6. The same week holds the 7-mile goal-pace run, the clearest sign of whether the goal is there. Then comes a proper taper, which tends to help runners race better than training straight through. The long run climbs unevenly, with its biggest step coming out of the second cutback. If a step like that feels like too much, finishing a mile short costs you very little.
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Variety
Are the workouts varied enough?
Nothing in this mix is filler. The plan uses 7 kinds of run: easy runs, long runs, medium-long runs, goal-pace intervals, continuous goal-pace runs, threshold tempos and the race itself, plus a shake-out with strides. The Tuesday session changes shape every week or two, from half-mile reps to three-quarter miles to full miles, then to long unbroken stretches. Don't mistake the broken version for the soft one: 8 one-mile reps put more miles at goal pace than the 7-mile continuous run does. The Thursday tempo grows steadily, and the longest long run folds goal pace into the middle. Everything faster than easy is either goal pace or threshold, which keeps every hard minute pointed at the race.
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.
This is a 16-week project, and you know what you are signing up for. You also know what the work feels like before it has begun to ask anything serious of you. The opening stretch is calibration more than performance. The easy days stay slow by design, and the harder ones teach the legs what each effort actually feels like. The volume starts asking real questions soon enough, and these early weeks are how you set yourself up to answer them well.
M Strength Training
Tu Intervals: 4×0.5mi @ ½ Marathon
2-mile warmup, then 4 by 0.5 mile at half-marathon goal pace with a 400 m recovery jog between reps, then 2-mile cooldown. First harder session of the plan. The reps are at goal pace, not faster: this is check, not racing. Pay attention to how 7:57/mile feels in the body when you're rested. That sensation is the reference point you'll keep coming back to. Repeats break hard running into pieces the body can absorb, building speed without breaking form.
W Strength Training
Th 4.9mi Tempo Run with 2.9mi @ Tempo
1-mile warmup, then 2.9 miles at tempo, then 1-mile cooldown. First tempo of the plan. Threshold sits roughly between 10K and half-marathon effort: controlled, comfortably hard, the place where you could sustain pace for an hour but wouldn't want to. Find that ceiling and stay underneath it. Sustained efforts like this sit at the pace you can hold for about an hour. 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. The first long run of the plan. Easy aerobic effort throughout: pace where you could hold a conversation without gasping. This sets the starting reference point. The long runs grow from here, climbing from 8 to 15 miles. Today's job is to finish feeling like you could go further if asked.
Su 5.5mi Medium-Long Run
5.5 miles at easy aerobic pace. First medium-long-after-long of the plan. The back-to-back is what trains tired legs to find their pace, which is what the last few miles of the race demand. Keep the pace conversational. If it feels harder than yesterday's long run, you're running it too fast.
You are at the front edge of the first build, still in the part where the body is willing and the calendar looks abstract. Nothing is taxed yet, and that is the point. The foundation gets laid here, in weeks that feel almost too easy to count. Pay attention to the small signals anyway. How well you sleep, how the legs feel between sessions, whether the easy days actually stay easy. The patterns you set now are the ones that carry through the harder weeks ahead.
M Strength Training
Tu Intervals: 5×0.5mi @ ½ Marathon
2-mile warmup, then 5 by 0.5 mile at half-marathon goal pace with a 400 m recovery jog, then 2-mile cooldown. This adds a rep to the 4-rep version. The pace shouldn't change, only the volume held at it. If the last rep is sloppier than the first, you started too fast. The rest between reps is what lets the work stay fast from first to last. Run the first rep like you plan to enjoy the last one. The workout was perfect if the last rep matched the first in pace and form.
W Strength Training
Th 4mi Easy Run
Easy 4 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 8.5mi Long Run
8.5 miles at easy aerobic effort. The long run keeps building. Let pace settle wherever conversation stays easy. The point isn't to run it faster than the shorter long runs. It's six more minutes spent running.
Su 6mi Medium-Long Run
6.0 miles, easy aerobic. Sunday medium-long sitting on the back of Saturday's long. Notice the legs as you start: this is the sensation of running on partial recovery. The body learns that state from repetition.
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Plan Strengths
- Goal pace comes back nearly every Tuesday, so by race day it's a pace your legs know rather than a number on a watch.
- Thursday's threshold tempo adds a second kind of hard running, and many coaches use it so goal pace feels further from your limit.
- The Saturday long run and Sunday medium-long run teach your legs to hold steady on partial recovery, which is the demand of the race's final miles.
- You'll get a lighter week every fourth week, hard days that never touch and a warm-up before every hard session, so the load never builds for long without relief.
- The taper cuts mileage while keeping goal pace in the rotation, so the rhythm of it stays with you as the miles come down.
Weaknesses & Gaps
- The first week of the main build is the steepest climb in load in the plan, with a longer long run, longer reps and a longer tempo arriving together.
- The long run grows in uneven steps, with big jumps out of the cutback weeks, rather than an even ramp.
- The weekend asks for real time: at the peak, a 15-miler on Saturday and 10.5 miles on Sunday morning.
What's missing
Strides show up only in race week. They're an easy add, and they cost very little. Once the base weeks are under way, finish Tuesday's warm-up with 4 to 6 strides of about 20 seconds, jogging easily between them. They're quick, relaxed practice at speed just before the reps begin. The plan has no tune-up race, which is a fair choice for a plan this focused on goal pace. If you want practice pacing in a crowd, a 5K or 10K on a Saturday mid-build, run at goal effort rather than all-out, with easy miles afterward to fill out the long run, is a reasonable coaching call. There's no hill work either. If your race has real climbs, run part of Sunday's medium-long on a rolling route so your legs know what uphill feels like at the end of a week.
What the science supports
Threshold or race pace: neither proven better
Tuesday is the goal-pace day. Half-mile reps in week 1 lengthen to 8 repeats of 1 mile by week 9. They then become continuous runs of 5 and 7 miles at goal pace in weeks 11 and 13. Thursday adds threshold tempo runs, a different kind of hard running. For recreational runners, race-pace work and threshold work are both reasonable choices, and no study shows one beats the other, so this plan simply gives each its own day.
Smyth & Muniz-Pumares 2020; Jones et al. 2021; Vickers & Vertosick 2016
Shifting training emphasis beats unchanging training
The plan moves through four phases: three weeks of base building, an eleven-week sharpening block, a taper week and race week. Inside the long build, cutback weeks at weeks 4, 8 and 12 split the work into blocks, and each block returns with longer goal-pace reps, longer tempos and a longer Saturday run. Planned changes in training tend to beat training that never changes. The late turn to continuous goal-pace runs follows how top coaches shift toward race work as the race nears.
Filipas et al. 2021; Bradbury et al. 2020; Sandbakk et al. 2025
Consistent mileage is linked to fewer injuries
The plan opens at about 25 miles a week and climbs to a 46-mile peak in week 13. Cutback weeks at weeks 4, 8 and 12 trim volume by roughly a quarter to a third before the next block resumes the climb, so the higher mileage arrives in stages over sixteen weeks. Steady weekly mileage built up over time is generally linked to fewer injuries, not more. That evidence is observational, and not every study agrees.
Two strength sessions a week is enough
Strength takes Monday and Wednesday for the first 15 weeks, then drops off in race week. Neither session shares a day with a run, so the 4 running days stay whole and Friday stays free. About 2 sessions a week, held for at least 6 to 12 weeks, is where most runners get the full benefit of strength training. Pooled trials found more sessions added nothing.
Blagrove et al. 2018; Balsalobre-Fernández et al. 2016; Llanos-Lagos et al. 2024
A real taper sharpens you for race day
After the 46-mile peak in week 13, volume eases to about 41 miles, then falls to about 27 in week 15, roughly 40 percent below the peak. Saturday long runs shift from 15 miles to 12 to 10. The hard efforts stay on the calendar: week 15 keeps 3 miles at goal pace and a 2.9-mile tempo, and race week brings 3 repeats of 1 mile. Cutting volume like this while keeping some speed improves race performance compared with not tapering.
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