Running Plan Review Buena Vida Run Club's 12-Week Run Your First 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
If you have been running for a few months, most of your runs probably sit at the same medium effort, because that is what a run has always meant. This plan asks you to split that effort in two. It opens with a block of easy miles before any hard running at all, with only a few strides (short, relaxed pickups) for company. No tempo, no hills, nothing that asks you to push. That can feel too gentle when the race is already on your calendar, but the later hills and tempo runs stand on it. Within a few weeks of easy running, the same pace starts to feel easier. Your breathing notices first. Your tendons and bones take longer to catch up, which is why the long run climbs in steps even on days you feel ready for more.
You run 4 days a week. The weekday runs are short and mostly easy, and Saturday is the long run. Tuesday is strength, and Thursday and Sunday are yours. Once the base is in, hill repeats take a midweek slot and a short fartlek (speed play, faster bursts dropped into an easy run) lands on Friday. Then Friday becomes the tempo day, at a comfortably hard effort that grows from half a mile to a full mile. The long run goes from 4 miles to 11, and that 11-miler carries 3 miles at half marathon effort through its middle. You won't run 13.1 before race day, and you don't need to. What you will have is the feel of race effort, held in the middle of your longest run.
The plan picks up from about 8 or 9 miles a week, with a 4-mile Saturday run you can already finish comfortably. That fourth day is what sets this apart from a 3-day plan: it spreads the miles so no weekday run goes past 3, and it gives the easy pace more practice. Easy means slow enough to hold a full conversation, and most first-timers run it too fast. Once the tempo runs start, Friday is the day to watch, because Saturday's long run comes the next morning. Finish Friday's tempo feeling you could have run a little farther, and Saturday takes care of itself.
What follows is Buena Vida's full review of the plan. Every plan is scored against our detailed, 30-point benchmark, drawn from peer-reviewed sports-science research and proven coaching best practices.
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Our Review
You don't need anything clever for a first half marathon, just patience, and patience is where this plan earns its keep. The base block is easy running only, and when harder work arrives it comes in small pieces: 6 hill repeats of 60 seconds, a short fartlek, then tempo blocks that grow from 0.5 mile to 1 mile. Each of the 6 hard sessions is framed by a warm-up and a cool-down, and the one week with two of them puts Thursday between the Wednesday hills and the Friday fartlek. Your first week totals 8.5 miles. Near the end, a single Saturday run is 11 miles, longer than that whole first week, with 3 miles at half marathon effort through its middle and 3 weeks still to go before the race. For a first-timer that is the right rehearsal at the right time.
Where the plan is thinner is rest along the way. There is one cutback in the whole build. The biggest jump in the work comes when hills and a fartlek arrive together in week 6, on top of the higher mileage week 5 brought. Run weeks 5 and 6 on the cautious side of every instruction, especially if you have had a stress injury or a tendon that flares when mileage climbs.
If you're already running around 9 miles a week and can give 4 days to the build, this is a plan to trust with a first half. If your week only holds 3 runs, the 3-day version reaches the same start line with less on the calendar.
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Structure
Does the plan build you up smartly?
Each block hands the next one a runner ready for it, which is what a first half needs. An easy base comes first, then a 6-week build where the long run and the Friday session grow together. You can feel the handoff from one phase to the next. Hills and a fartlek open the harder running in week 6, and from week 7 the Friday session settles into tempo for the rest of the build.
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Prevention
Does the plan protect you from injury?
Day to day, yes. Outside week 6's hills and fartlek and the Friday tempos, every weekday run is easy. Where the plan is less careful is how the load arrives. Week 5 lifts the week to 14 miles and the long run to 7.5, up from 11 miles and a 6-mile long run in the last full base week, and week 6 then brings hills and a fartlek for the first time on top of that higher volume. That is the sharpest rise in load anywhere in the plan. Tempo also debuts in week 7, a week when the mileage is rising too. There is only one real cutback, at the end of the base, so from week 5 to week 10 you are mostly climbing. Jumps like week 6's tend to be when injury risk climbs, and tendons and bones usually take longer to catch up than your breathing does. Many runners notice a lingering ache before a real injury. If one turns up while the load climbs through weeks 5, 6 and 7, run clearly less for a week, starting with the Monday and Wednesday runs, rather than pushing through or stopping altogether.
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Flexibility
What happens when you miss a day?
The week has room to absorb a miss. Thursday and Sunday are open, and the plan ranks its sessions: Saturday's long run and Friday's fartlek or tempo come first, the Monday and Wednesday runs next, Tuesday strength after that. So if something has to go, let Tuesday's strength session go first, then an easy weekday run, and don't try to make either up. If you miss a Friday tempo, let it go. The next Friday picks up the thread, and stacking it onto the long-run weekend costs more than it gives. If you miss a long run, run it on Sunday, shorter if the week has gone sideways. The plan doesn't say what to do after a lost week, but if illness or travel takes most of one, running it again is usually wiser than jumping ahead to a longer Saturday.
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Readiness
Will the plan deliver race-day fitness?
Finishing a first half strong takes the right peak, the right long run and a rehearsal, and this build has all three. A peak week of 18.5 miles and an 11-mile longest run sit comfortably in the range a first half needs, and the long run peaks 3 weeks before the race, leaving time to recover from it. Tempo work grows through the back half of the build, and the 11-miler's middle 3 miles at half marathon effort are a genuine rehearsal of how the race should feel. The soft spot is the very end. A taper tends to help on race day, but this one is lopsided: the taper week trims only a little from the week before it, then race week drops to a single 15-minute shake-out before the race. If four days with no running leave your legs flat, a short easy run early in race week is a reasonable addition.
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Variety
Are the workouts varied enough?
For a first half, the spread of sessions is well chosen. Six kinds of run appear: easy runs, long runs, hill repeats, a fartlek, tempo runs and the race itself, plus strides most weeks once the base is under way. From week 6's hill repeats to week 10's mile at tempo, every hard session spells out its warm-up, its work and its cool-down, and says what it is for. The range of hard sessions is narrower: hills, the fartlek and tempo are the only 3 formats, and tempo is the one that repeats. For a first-timer that is a fair trade, since learning what comfortably hard feels like (clipped phrases, no full sentences) matters more right now than a wider menu.
Workouts
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Here you are at the start of something you decided to do, and that decision is worth honoring as you lace up. The early runs are not meant to feel impressive, and that is on purpose. A body that has not been running this often needs time to remember the rhythm of regular movement. Show up when the calendar says to, and let the easy runs stay truly easy. 11 weeks can look long from where you are standing. That is fine, because you only have to be present for the week you are inside of.
M 1.5mi Easy Run
1.5 miles easy, at a conversational pace. This is the first run of the plan. The point today is not the distance. It is teaching your breathing and your legs what easy actually feels like, before any mileage starts to grow. Most first-time half-marathoners try to make these early runs feel like progress and end up running them too hard. If your breathing tightens past the point where you could speak a full sentence, slow down. The weeks ahead need this gear available.
Tu Strength Training
W 1.5mi Easy Run
Wednesday easy. 1.5 miles at the same conversational effort as Monday. It may feel almost too easy, and that is the point. Easy early means harder running goes cleanly later. Miles like these are where your base builds, one easy run at a time.
Th Rest
F 1.5mi Easy Run
Friday short run before tomorrow's long run. The long run is just the longest run of your week, the one that builds your distance over time. On this plan it lands on Saturday. Today is 1.5 miles, loose and slow. Save anything fast for the morning.
Sa 4mi Easy Run
Long run. 4 miles at conversational effort. The legs may surprise you in either direction. Fresh and ready, or heavier than expected. Both are normal. Run by breath. Pace will follow. If you can hold a full sentence between strides, you are doing it right. The long run is where most of the work pays off. Show up to it weekly, conversational, every weekend.
Su Rest
This week is about doing it again, which sounds small but is most of what training is. Your job right now is to make running a regular shape in your week. It should stop being a special event you have to summon energy for. Some mornings will feel willing and some will feel reluctant. Both kinds count exactly the same toward the runner you are becoming.
M 1.5mi Easy Run
Monday easy. 1.5 miles, same conversational gear as last week. Legs may feel slightly heavy from Saturday's longer run. That is the long run paying for itself. Jog it out at true effort and let the body settle in.
Tu Strength Training
W 1.5mi Easy Run
Wednesday easy. 1.5 miles, steady minutes. Effort goal is the same as Monday. The job today is gentle repetition, the kind of running that adds up without ever feeling like work.
Th Rest
F 1.5mi Easy Run
Friday primer. 1.5 miles before tomorrow's 5-mile long run. Stay loose, stay slow. Save the legs for the weekend. Easy days exist to let the harder days do their work, and they only work if they stay easy.
Sa 5mi Easy Run
Long run. 5 miles easy, conversational throughout. About a mile longer than last weekend's 4. The new ground at the end may take a few minutes to settle. Walk for 30 seconds if breathing rises, then start running again. The long run grows by roughly a mile a week through the base phase.
Su Rest
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All 12 weeks in the app
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Plan Strengths
- A block of easy running before any hard session, so 5 weeks of easy miles are behind you when the hills and fartlek arrive.
- The long run builds from 4 to 11 miles and peaks 3 weeks before the race, with 3 miles at half marathon effort as a race rehearsal.
- Hard sessions are short, fully written out with warm-ups and cool-downs, and never on back-to-back days.
- Clear phases (base, build, taper, race week), each with its own job.
- Weekday runs stay short, 3 miles at most, so 4 days a week fits around a working week.
Weaknesses & Gaps
- Only one cutback, at the end of the base, so weeks 5 through 10 mostly climb.
- Week 6 adds hills and a fartlek together on top of higher volume, the sharpest rise in load in the plan.
- Tempo debuts in week 7, a week when mileage is also rising, so a new kind of effort arrives alongside more running.
- Race week drops to a single 15-minute run before the race.
What's missing
Add a second recovery week yourself in week 8, since the plan has only one. The long run already steps down there, so run the Monday and Wednesday runs a little shorter too and let the whole week be lighter before the peak. It also stacks new load quickly as the build opens. Running the week 5 long run at 6 miles instead of 7.5, with the weekday runs as written, means week 6's hills and fartlek land on a lower base, which takes the edge off the biggest spike in the plan. Race week is nearly empty before the shake-out, so if you feel stale, an easy run of 2 or 3 miles on Tuesday or Wednesday keeps the legs awake without costing anything. Finally, the hard sessions stick to 3 formats. You don't need more for a first half, and the weekly strides already give your legs a taste of quicker running.
What the science supports
Shifting training emphasis beats unchanging training
The plan breaks into four phases. The base phase runs four weeks of easy running, with only light strides (short, relaxed bursts of speed) near the end, building the base before any harder work arrives. Build takes six weeks where faster sessions start in week 6 and tempo, comfortably hard running, grows across four weeks. The taper eases the load in week 11, and race week follows. Research suggests that training planned in phases like this tends to bring better results than running the same way every week.
Filipas et al. 2021; Bradbury et al. 2020; Sandbakk et al. 2025
Easy miles do most of the work
Most of your running stays at conversational pace where you can hold a full sentence the whole way. Nearly 90 percent of your weekly miles live at this easy effort. Harder sessions arrive only in weeks 6 through 10. Research shows that the bulk of a runner's training should sit at low intensity, building the foundation that carries harder work and helps the body adapt to it. The long run grows on easy effort alone from 4 miles to 9.5.
The body adapts on a staggered clock
The first 5 weeks hold no hard sessions, only easy running, while the Saturday run grows from 4 miles to 7.5. Hill repeats and speed play wait for week 6. Fitness from running tends to arrive within the first few weeks, while tendons take weeks to a few months to adjust and bone takes months. That staggered timing is the usual reason to add mileage gradually, even when your breathing says you're ready for more.
A real taper sharpens you for race day
Week 11 trims the running to 14.5 miles from the 18.5-mile peak and brings the long run down to 8 miles. Race week then holds only a 15-minute shake-out, a very short, very easy run, before the half. Strides on Friday of week 11 and inside the shake-out keep a touch of speed in the legs. Research on tapers finds that cutting volume while holding some speed improves race performance compared with not tapering.
Longer long runs go with faster marathons
Your longest run peaks at 11 miles in week 9, three weeks before the race and close to the 13.1-mile distance. Early evidence from marathon training links longer long runs with faster finishes. No study has tested whether shorter, faster sessions could do the same job, and the link likely matters less at the half. Week 9's 11-miler also holds 3 miles at half marathon effort as a race rehearsal.
Doherty et al. 2020; Fokkema et al. 2020; Toresdahl et al. 2022
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