Running Plan Review Buena Vida Run Club's 12-Week Sub-1:45 Half Marathon (4 days)
Plan at a Glance
A sub-1:45 half marathon is the kind of time goal that asks a runner to step into a different gear. It isn't casual pace, and it isn't an elite time either. It's the speed where racing starts to feel different from running, where the body has to learn more than just how to cover the distance.
Plans that work for this kind of goal share one trait. They give the runner more than one way to experience the goal pace before race day, so the effort feels familiar from a few different angles when it counts. Some plans try to do that across more weeks than the runner has. Others pack too much hard work in and arrive at race week empty. The well-built ones split the difference.
This is Buena Vida's twelve-week version, written for runners who are already running comfortably four days a week and want to take a real swing at a faster time.
What follows is our full review of the plan. Buena Vida grades every plan on the same detailed, 31-point benchmark. Each measure comes from peer-reviewed sports-science research and proven coaching best practices.
Similar plans
Our Review
You're chasing a three-to-ten-minute drop at the half, and twelve weeks is what that gap costs. You'll run 45 peak miles across four days. Mile reps will train goal pace as a sustained effort. You'll hold threshold across blocks that climb to 5.6 miles. The plan assumes you arrive already running 25 to 30 weekly miles as a steady baseline.
What decides whether 8-minute pace feels steady at mile 11 is the gap between threshold and goal pace. The tempo work in weeks 3 through 9 closes that gap. You'll watch your threshold ceiling climb until 8-minute pace sits comfortably below it rather than at it. You'll do ten weekly tempos that grow from 3.4 miles in week 1 to 5.6 in peak week. That growth is the engine the plan runs on. You'll meet Sunday's medium-long sitting on top of Saturday's long run on purpose. By week 9 you're running 10.5 miles on legs that already covered 15 the day before. That cumulative fatigue (the deliberate stacking of two long efforts) is what lets you hold pace through mile 11 of the race.
This is a clean, well-built twelve weeks for the four-day advanced runner. The phases transition with purpose, the cutback weeks are real, and the taper keeps pace memory sharp. If you can find a 10K three weeks out, you'll gain a pace check the tempo work alone can't give. Runners who keep long sessions shorter for joint reasons should look elsewhere, since the weekend doubles ask a lot.
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Structure
Does the plan build you up smartly?
Six named phases carry you from base through race week, and each one hands off to the next on purpose. The long run climbs in steps from 8 to 15 miles, with cutback weeks at 4 and 8 that pull volume back so the prior block can settle before the load resumes. Hard days sit on Tuesday and Thursday with a rest day between them, every week. The build curve is gradual enough that the logic reads straight off the calendar.
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Prevention
Does the plan protect you from injury?
Mostly, with one stretch that asks for an honest eye. Easy running fills roughly 75 to 80 percent of the week, the right share for high-load advanced training, and intervals and tempo are split by a true rest day so no two hard sessions stack. The catch is the three-week run before the week-8 cutback, where the load climbs and holds elevated across weeks 5, 6, and 7 without a down week between them. None of those weeks crosses into spike territory, but they ride the high end together, so the easy days through that block carry more weight than usual and are the ones to keep genuinely easy.
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Flexibility
What happens when you miss a day?
Miss an easy day and the plan absorbs it without a ripple. Miss the Saturday long run and you are off the rails the schedule leans on. Every workout carries a priority, so when a week shrinks you can see which sessions to protect (the goal-pace and tempo days hold their place right through the taper) and which to let go. The plan keeps you adjusting by effort when heart rate or legs run off, since goal pace is anchored at 8-minute miles and the harder days carry their own feel. What it does not hand you is a rule for rebuilding a long run you skipped. That call stays with the runner.
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Readiness
Will the plan deliver race-day fitness?
Race-day fitness is the whole point of this build, and the setup is thorough. You meet 8-minute goal pace in three different shapes: short reps, mile reps, and a 6-mile continuous block, plus 3 miles tucked inside the peak 15-mile long run. The threshold tempo grows to 5.6 miles, pulling your sustainable ceiling above goal pace, and peak weeks reach roughly 50 miles across four run days. The 15-mile long run carries you two miles past race distance, so 13.1 at pace is a step down from the hardest day you have already run.
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Variety
Are the workouts varied enough?
No two quality days run the same shape, which keeps a four-day week from feeling repetitive. Intervals rotate through short reps and mile reps at goal pace, a tempo ladder builds the threshold work, and long and medium-long runs anchor the aerobic side, with strength twice a week underneath it all. Each session has one clear job. Even race week stays varied, with a short tune-up Tuesday and a shake-out Friday before the start line.
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 start of twelve. The first week is 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: 4x0.5mi @ ½ Marathon
First interval session of the plan. Two miles warmup, then 4 x 0.5 mile at 8-minute half-marathon goal pace with 0.25-mile recovery jogs, then two miles cooldown. The reps are at goal pace, not faster. That's the lesson of week 1. 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 set landed if the last rep matched the first in pace and shape.
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 raise the pace you can hold before breathing becomes the limiter. The session landed if the final stretch held pace without the form unraveling.
F Rest
Sa 8mi Long Run
First long run of the cycle. 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 starts here and climbs from 8 to 15 miles by week 9. Today sets the rhythm that climb is built on.
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. This is the first session that asks fatigue resistance directly.
The legs may carry a low-grade heaviness through this stretch, and that signal is exactly what you want to be feeling right now. The cardiovascular load is starting to land, capillary density is shifting, 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. The adaptations being seeded right now are the foundation everything in the back half of the plan gets to stand on. Stay patient with the easy days and let them do their work.
M Strength Training
Tu Intervals: 5x0.5mi @ ½ Marathon
Intervals grow by one rep. 2-mile warmup, 5 x 0.5 mile at half-marathon goal pace with 0.25-mile 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 land. 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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Plan Strengths
- Across nine interval sessions and ten tempos you'll learn goal pace as three different feelings (short reps; mile reps; threshold tempos).
- The peak long run reaches 15 miles, so race day arrives at a distance your legs already know rather than one they're guessing at.
- Mileage opens at 27 in week 1 and reaches 45 by week 9, in clear weekly steps the body can absorb without overuse risk.
- Two strength sessions a week back the structural resilience a 45-mile peak load asks of you.
- Recovery weeks at 4 and 8 are real cutbacks (not nominal ones), so the next build phase starts from a consolidated body.
- The taper steps load down across two weeks while keeping pace memory active; you arrive at race day sharp rather than flat.
Weaknesses & Gaps
- Peak weeks reach 45 miles across four runs. Each session averages above 10 miles. Runners who cap individual long runs short for joint reasons may find the back-to-back Saturday-Sunday too dense.
- The plan assumes goal pace is 30 to 60 seconds per mile faster than your current half PR. Runners chasing a bigger gap should pick a longer cycle.
What's missing
The plan schedules no tune-up race, deliberately rather than as an oversight: the evidence doesn't show mid-build races improving race-day outcomes, and the goal-pace intervals read your fitness every week. Runners who simply enjoy racing can slot a 10K three weeks out as a workout, but nothing in the build depends on it. The four-run weeks are dense on purpose. The long run and the next-longest run sit back to back on the weekend, and at peak each individual run averages over 10 miles, which can be a lot to ask of runners who keep long sessions shorter for joint reasons. If that's you, split the weekend or trim the medium-long and watch how the legs respond. The goal is also calibrated to a moderate drop from a current half PR, somewhere between 30 and 60 seconds per mile. Runners chasing a bigger gap should pick a longer cycle than this twelve-week one and build the base first.
What the science supports
Periodization beats constant-load training
Twelve weeks divides into six purposeful phases: Base (weeks 1-2), Sharpen (weeks 3-7), Recovery (week 8), Peak (week 9), Taper (weeks 10-11), and Race Week. Each phase shifts the workout composition, the load, or both. Intervals grow from short reps to mile reps. Tempos climb from 3.4 to 5.6 miles. The long run builds to 15 miles before the taper pulls it back. This progression lets your body adapt at each stage rather than facing constant-load training for twelve weeks.
Bradbury et al. 2020; Tønnessen et al. 2014; Casado et al. 2022
Keep easy days easy, hard days hard
Tuesday carries interval work at goal pace; Thursday holds a tempo run at threshold. Wednesday and Friday stay easy. That's five days between Tuesday and the next Tuesday's intervals, and the hard days are separated by at least one easy day every single week. Easy days account for roughly 75 to 80 percent of weekly mileage. The sharp split between hard work and recovery means your body recovers fully between intervals and tempos, letting the adaptation from each session land rather than accumulate without resolution.
Stöggl & Sperlich 2014; Casado et al. 2022; Kenneally et al. 2017
Tapering improves race performance by 2-6%
The final two weeks cut volume by 40 to 60 percent while keeping intensity touches in place. Your peak long run of 15 miles lands in week 9, two full weeks before the half marathon. The taper week before the race drops to short, sharpening runs. That taper timing (sharp at nine miles, easy at two) lets fatigue leave your body while your nervous system stays primed for goal pace. Research shows a two-week taper at this load produces 2 to 6 percent performance gains.
Varied intensity beats steady moderate pace
Your harder work mixes three forms: nine interval sessions at goal pace (ranging from quarter-mile reps to full miles), ten threshold tempos growing from 3.4 to 5.6 miles, and long runs building to 15 miles. This palette of hard work teaches goal pace in three different shapes (short repeats with recovery, sustained threshold, and fatigue-stacked distance). That variety produces stronger adaptations than running at a single steady moderate intensity every day would.
Stöggl & Sperlich 2014; Rosenblat et al. 2019; Casado et al. 2022
Long runs are essential for marathon
Your peak long run reaches 15 miles, two miles past race distance. For a sub-1:45 half marathon, that extra distance teaches your legs to hold goal pace when fatigue is already present. The week before peak, you run Saturday's 13-mile long run followed by 10.5 miles on Sunday, training the specific fatigue resistance the back half of the race demands. Most runners at this level find miles 10-13 of the race are where fitness is decided. The cumulative work of these long weekends teaches your legs how to hold pace through that stretch.
Toresdahl et al. 2021; Jones & Kirby 2025; Casado et al. 2019
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