Running Plan Review Buena Vida Run Club's 12-Week Base Building (6 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
This plan is for the stretch between goals, when a race build is coming and you want to start it on stronger legs. It raises your floor. Weekly volume climbs from about 40 miles to 60 at its biggest, and the long run grows from 12 miles to 19. Nearly all of it is easy, at the pace you can talk at.
Most runners resist that. The watch rewards pace, and tired legs feel like proof of work. But easy running is the base that carries harder training and helps the body adapt to it, and higher mileage built up gradually is linked to fewer injuries, not more. What limits the climb isn't your breathing, which comes around in weeks. It's your tendons and bones, which take months. So the plan climbs for three weeks, then backs off for one to let the work settle. By the second of those lighter weeks, the long run at recovery pace is longer than the long runs you started with. That is what a rising floor looks like.
Faster running arrives late and in small doses. Strides come in early, then a few fartleks (bursts of quicker running inside an easy run), and a weekly tempo only once the 6-day rhythm feels routine. The tempo never gets longer. Treat it as a check-in, not a test.
You should already be running 6 days a week at about 40 miles. The long run falls on Saturday, and Sunday's strength session is your one day off from running. If you aren't on 6 days yet, the 5-day version is the better fit. Finish this, and whatever race plan comes next starts from higher ground.
Our full review of the plan follows. We grade every plan on the same 30-point benchmark, with each measure drawn from peer-reviewed sports-science research and proven coaching best practices.
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Our Review
Run it. If you already hold 6 days a week, know the pull of a watch that rewards pace, and feel a little impatient with any block that has no race at the end, this is the block that pays you back for staying patient. Almost every mile is easy, which is what lets the volume reach 60 miles and the long run reach 19 without the harder days fighting the easy ones. The climb comes in steps with a cutback every fourth week, and the quicker running stays small: strides, a handful of fartleks, and a short weekly tempo in the second half.
The gaps are small, and you can plan around them. The weekly tempo arrives in a week where the mileage also rises, so ease into it. The running stays within four kinds, with no hills or true intervals, and sessions carry effort labels rather than goal-pace targets. A base block can afford that narrowness, since the variety belongs to the race plan you run next. This one leaves you with the miles in your legs to start it.
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Structure
Does the plan build you up smartly?
A patient, well-made climb takes you from 39.5 miles a week to a 60-mile peak. The long run grows almost every week from 12 miles to 19, peaks the week before the last, then steps down. That final long run is 14.5 miles, a distance that was once your longest run and now serves as the easy one you finish on. The one mark against the structure is its shape: two phases, Foundation and Build, with no distinct third stretch. For a base block that's a fair trade, since sharpening is the job of the race plan that follows.
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Prevention
Does the plan protect you from injury?
Thoroughly, with the hard days kept small and kept apart. Apart from strides, every run outside the Monday tempos and Wednesday fartleks is easy, each of those 10 sessions opens with a warm-up, and when both fall in one week, Tuesday's easy run sits between them. The volume rises in three climbs, each closed by a cutback week. The one spot to manage is the Monday the weekly tempo arrives. You'll have spent 6 weeks running mostly easy, your legs may feel fresher than you expect, and the longest run so far was 2 days earlier. The tempo is only 2.5 miles, and the urge will be to run it hard and prove the base is working. Don't. That week's mileage is already climbing, so run it at short phrases, never full sentences, and Saturday's 16 miles will thank you. If an ache shows up at any point and lingers, cut the running well back for roughly a week (not a full stop). Many runners find a lingering niggle is the first hint of something bigger.
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Flexibility
What happens when you miss a day?
The plan tells you what to protect. The Saturday long run and the week's tempo or fartlek are the sessions that matter most, and the weekday easy runs are what gives when a week gets crowded. When you need a day off, take it from a short easy run or the Sunday strength session, never the long run or the harder session. A tempo missed on Monday can move to Tuesday in most weeks. In the two weeks that also hold a Wednesday fartlek, let the missed tempo go and keep the fartlek, so the hard days stay apart. If illness or travel takes most of a week, don't try to make the miles up. A cutback is never more than 3 weeks away, and picking up where the calendar is serves you better than chasing the missed volume.
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Variety
Are the workouts varied enough?
Strides, varied fartleks and a weekly tempo give this base block a well-judged spread. The running comes in four kinds (easy, long, fartlek and tempo), with strides once a week from week 3 and strength every Sunday. Strides are cheap, low-risk practice at running fast, a few minutes that cost the rest of the week almost nothing. The fartleks change shape each time (short bursts, even surges, a ladder, then free-form efforts by feel), and each harder session is spelled out from warm-up to cool-down and explains its own job. What's absent is hills, true intervals and progression runs. Sessions also carry effort labels (aerobic, tempo, threshold) rather than goal-pace targets, a small gap in how precisely each one is set. The notes give a simple check for tempo: short phrases, never full sentences.
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 the part of the year almost nobody bothers to take seriously, and you have decided to take it seriously anyway. What follows is 12 weeks of patient aerobic work, with no race breathing down your neck and no taper to plan around. The aim is to be a stronger runner a few months from now without ever having to grit your teeth to get there. Take this week to settle into that register and remember what easy actually feels like in the legs.
M 5.5mi Easy Run
5.5 miles easy. There's a small temptation, on the opening day of a new plan, to start with a touch of effort just to feel like it has begun. It has begun because you're out the door. Conversational pace the whole way. 6-day weeks survive on the discipline of holding easy truly easy.
Tu 5.5mi Easy Run
5.5 miles, easy. Same shape as yesterday, and that's the point: the rhythm shows up first, the fitness follows. Keep it easy enough to breathe through your nose. If you finish feeling fresh and barely worked, it did its job.
W 5.5mi Easy Run
5.5 miles, easy. 3 runs in 3 days. The legs may feel the run-a-day rhythm by mile 2. That's normal at the start of a base block. Hold the pace down.
Th 5.5mi Easy Run
5.5 miles, easy. Resist any drift toward moderate effort. Saturday's long run is the only place this week where pace matters. Easy runs like this are where the base comes from.
F 5.5mi Easy Run
5.5 miles, easy. Last weekday run before tomorrow's long. Treat this one as prep, not a workout. Finishing with energy to spare means the effort was right. Repetition at this effort adds up without ever feeling like work.
Sa 12mi Long Run
12 miles at conversational pace, the first long run of the block. The job here is the duration, not the pace. Most runners settle into a long run somewhere around mile 3. If it takes longer than that today, that's fine. What this builds is the time-on-feet base every later week sits on. The long run starts here and climbs to 19 miles at its longest.
Su Strength Training
Mitochondrial density, capillary growth around the slow-twitch fibers, the slow remodeling of the connective tissue around your ankles and feet: this is the hidden machinery a base block actually changes. None of it is visible on the watch yet, and most of it does not surface until well into the next build. Run the easy stuff genuinely easy and let the volume do its work. The legs do not need to feel quick right now.
M 6mi Easy Run
6 miles, easy. Volume is up half a mile per weekday. The change should be barely noticeable. Mid-week easy runs feed Saturday's long run. Keeping these runs easy is what lets the long run carry its weight.
Tu 6mi Easy Run
6 miles, easy. Settle in and let the miles accumulate without negotiating with the watch. Pace discipline today is what makes the long run controllable on Saturday. Keep the rhythm going and leave the legs fresh for the weekend.
W 6mi Easy Run
6 miles, easy. Resist the temptation to push, even on a good day. The legs that feel a little heavy here are the legs that handle volume when it climbs.
Th 6mi Easy Run
6 miles, easy. This is base mileage, not training stress. The point is recoverable volume, not a workout. Keep the effort at a pace where full sentences come without strain.
F 6mi Easy Run
6 miles, easy. Last weekday before the long run. Run this slower than you think you should and you'll thank yourself tomorrow. Everything harder later in the plan draws on runs like this.
Sa 12.5mi Long Run
Long run, 12.5 miles, the longest run so far. Keep the same effort as the previous long run. Start a notch slower than feels natural, because the effort climbs on its own over the later miles. The last 20 minutes should not feel like a race. If they do, you started too fast. Most runners find the middle stretch passes faster than they expect.
Su Strength Training
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All 12 weeks in the app
Daily coaching notes, nutrition guidance, reschedule logic, and strength placement.
Plan Strengths
- Nearly every mile is easy, which lets weekly volume reach 60 miles and the long run reach 19 without the harder days wearing you down.
- A cutback every fourth week breaks the climb into steps, so you get a lighter week to catch your breath before the next one starts.
- Quicker running comes in small, well-placed doses: strides from week 3, and every fartlek lands in a week that eases off from the one before.
- Strength is on the calendar every week, the day after the long run.
Weaknesses & Gaps
- The weekly tempo arrives in a week where the mileage also rises, so two new loads land together.
- Only four kinds of run (easy, long, fartlek, tempo), with no hills, true intervals or progression runs.
- Sessions carry effort labels rather than goal-pace targets.
What's missing
Hills are the main thing missing. Getting your legs used to climbing before a race build asks for it is cheap insurance, so pick a rolling route for one or two of the weekday easy runs in the second half and keep the effort easy on the climbs, walking the steep bits if your breathing gets ahead of you. Keep those runs away from the day after a tempo or fartlek. True intervals and progression runs are missing too, and that's fine here: they belong to the race plan you move to next.
What the science supports
Many running injuries start suddenly
Your long run grows by a mile or less most weeks, from 12 miles to 19. Its one bigger step, from 16 to 17.5, stays within about a tenth of the longest run before it. Many injuries that look like slow wear start suddenly, often right after a single run that goes well past a runner's recent longest. The finding comes from runners tracked by GPS watch and covers distance only. Keeping each new longest run this close to the last steers clear of that trigger.
Easy miles do most of the work
Each week sits on a foundation of easy aerobic runs. The plan climbs from 39.5 miles in week 1 to a 60-mile peak in week 11, and about 97 percent of all that running is easy, long run included. Easy running makes up most of a distance runner's week, and that easy volume is the base that carries harder training. Here the harder days stay few, so nearly every mile adds to that base.
Consistent mileage is linked to fewer injuries
The progression keeps overall load manageable despite climbing to 60 miles. Cutback weeks at weeks 4, 8 and 12 step volume down by a fifth to a third before the next climb. That pattern builds chronic load, the running you have stacked up over months. When the climb is gradual, running more each week is generally linked to fewer injuries rather than more. That evidence comes from observation, and not every study agrees.
Keep easy days easy, hard days hard
Hard sessions start arriving in week 4 with brief fartleks mid-week. The main structure arrives in Build: a 2.5-mile tempo on Monday in every week from week 7 except the week 8 cutback, and the long run on Saturday. Tuesday through Friday stay at easy, conversational pace apart from a fartlek every other Wednesday. Trained runners usually improve more when hard days are clearly hard and easy days clearly easy than when every run sits at a medium effort.
Stöggl & Sperlich 2014; Casado et al. 2022; Kenneally et al. 2018
Mix easy and hard instead of steady medium
Beyond the easy runs and long run, the plan layers in varied hard sessions. Weeks 4 and 6 include short fartleks. Weeks 7 through 12 add a 2.5-mile tempo on most Mondays, with fartleks of different shapes in weeks 8, 10 and 12. Mixing mostly easy running with a few clearly hard efforts may build endurance better than a steady medium-hard grind. Recent reviews find the edge is small and shows up more in VO2 max (how much oxygen the body can use) than in race times.
Stöggl & Sperlich 2014; Rosenblat et al. 2019; Casado et al. 2022
Get the full plan in the app
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