Running Plan Review Buena Vida Run Club's 10-Week Sub-1:45 Half Marathon (4 days)
Plan at a Glance
Ten weeks is a short runway for a sub-1:45 half marathon. Most plans aimed at that time give twelve to sixteen, on the theory that race-pace fitness needs months to settle in. This one moves quicker because it asks more at the starting line. You walk in already holding thirty miles a week and a half marathon time within a few minutes of the goal. The plan's job is not to build a runner from scratch. It is to take a runner who is already close and finish the gap.
A sub-1:45 half means holding 7:57 per mile for thirteen miles. That pace lives in an awkward middle. It is faster than a comfortable Sunday effort and slower than an all-out 5K. The runners who miss the goal usually miss it the same way. They build mileage without ever rehearsing the pace, or they rehearse it in short reps that never teach the legs how it feels at mile 10. A real plan for this goal has to do both jobs.
Buena Vida wrote this version for runners with the base already in place. Four mornings a week across ten weeks. Goal pace shows up on Tuesday, sustained harder running on Thursday, the long run on Saturday with an easy effort Sunday on tired legs. It assumes your most recent half came in between 1:50 and 1:55. If your base sits below thirty miles a week, the twelve-week version gives a longer runway.
What follows is Buena Vida's full review of the plan. Every plan is scored against our detailed, 31-point benchmark, drawn from peer-reviewed sports-science research and proven coaching best practices.
Similar plans
Our Review
You bring four mornings a week, ten weeks, and a thirty-mile base. That is the budget the plan has to spend. You'll run goal-pace intervals on Tuesday and threshold tempo on Thursday. You carry Saturday's long run, then go back out Sunday on legs that still remember yesterday. You lift Monday and Wednesday. Every day on the calendar asks for something specific.
This plan's distinguishing move is keeping race-pace work in two channels and only stepping it into a long run once. Tuesdays you run goal-pace intervals, climbing from four half-mile reps in week 1 to eight mile reps in peak week. Thursdays you run threshold above race pace. The single long-run insertion comes in peak week: three miles at 7:57 sandwiched inside a 15-mile run, with six easy on each side. You race miles 8 to 11 once before race day, and that one rehearsal is enough.
You belong here if you're already at thirty to thirty-five miles a week with a recent half between 1:50 and 1:55. If your base is below 25, build aerobic miles for four to six weeks before week 1. You absorb the week-4 deload as recovery for the next build, not as a soft week. What you arrive at the start line carrying is what these ten weeks built.
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Structure
Does the plan build you up smartly?
The calendar carries its own logic, legible at a glance. Five named phases run base into a week-4 cutback, a second build that stacks heavier than the first, then a two-week taper before race week. Both mesocycles hold a 3-to-1 build-to-recovery rhythm, and hard days never land back to back. Every key session spells out its warmup, work, and cooldown.
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Prevention
Does the plan protect you from injury?
Mostly, with one ramp to watch. Easy running holds 84 percent of weekly miles, every hard day has an easy day beside it, and strength lands twice a week. The week-4 cutback and the two-week taper both give the body planned downshifts. The one rough edge: mileage climbs about 49 percent coming out of that cutback into week 5, the plan's steepest single step.
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Flexibility
What happens when you miss a day?
An easy day can go missing and the plan barely registers it. The Saturday long run is the exception; recovering a lost one is a call the plan leaves to you. Every workout carries a priority number, so a shrinking week shows plainly what to protect and what to drop. The two-week taper is wide enough that one skipped run won't reach race day, and effort-based pace options leave room to flex when sleep or stress shifts.
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Readiness
Will the plan deliver race-day fitness?
By race week, 7:57 is a pace the legs have already rehearsed under load. Mile repeats at goal pace build from four reps to eight, threshold tempos grow to 6 miles, and the long run reaches 15 with 3 miles at goal pace tucked inside it. The taper holds those harder sessions at race intensity while trimming the volume around them. That combination is what turns goal pace from a target into a feel the legs can call on.
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Variety
Are the workouts varied enough?
Six kinds of session each pull a different lever. Goal-pace intervals drill race rhythm, threshold tempos lift the pace you can hold, long and medium-long runs build the endurance to hold form when tired, and a single mid-plan fartlek turns speed into aerobic volume. The interval format keeps shifting, from 4 by half-mile up to 8 by mile as the weeks build. Strength twice a week keeps the legs durable under the load.
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.
Standing at the start of a ten-week build for a goal that sits a few minutes under your current ceiling tells you something about where you are already and where you intend to go. The opening stretch will feel routine, almost too easy on paper, and that is by design. Settle into the rhythm before you ask it to deliver anything. The fitness that lands a half at this kind of pace takes shape over the whole arc, not in any single session at the front of it.
M Strength Training
Tu Intervals: 4x0.5mi @ ½ Marathon
2 mile warmup, then 4 x 0.5 mile at goal pace (7:57 per mile) with 400 meters recovery jog, then 2 mile cooldown. First harder session of the plan. Reps should feel controlled, not maxed. If rep four still feels strong, the dose was right. 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. The set landed if the last rep matched the first in pace and shape.
W Strength Training
Th 7mi Tempo Run with 4mi @ Tempo
1.5 mile warmup, then 4 miles at threshold (about 7:40 per mile), then 1.5 mile cooldown. First tempo of the plan. Comfortably hard, not race pace. The right effort tells the truth in the final mile: still steady, breathing rhythmic. Sustained efforts like this raise the pace you can hold before breathing becomes the limiter. Comfortably hard means a few words at a time, never full sentences. The session landed if the final stretch held pace without the form unraveling.
F Rest
Sa 8mi Long Run
8 miles easy and aerobic. First long run of the plan. This is the baseline the next nine weeks build from, so the goal isn't to make it feel big, it's to make it feel readable. Conversational pace, breathing rhythmic. If you can't hold a sentence, slow down. Most runners want to push the first long. Resist that here. The long run starts here and climbs from 8 to 15 miles by week 7. Today sets the rhythm that climb is built on.
Su 5.5mi Medium-Long Run
5.5 miles easy. Back-to-back of long plus medium-long. The pairing teaches the legs to run on residual fatigue. Pace should feel slower than yesterday, not the same. Start slower than feels necessary and let the pace find itself after a few miles.
The aerobic system does most of its real work without making any noise, and what you log this week is closer to that quiet building than to anything spectacular. Capillaries, mitochondria, and the slow-twitch fibers you are about to lean on for the race distance all adapt on a clock that runs slower than the calendar wants. Stay patient with the easy days. They are where the engine actually grows, even when the calendar makes them look like filler.
M Strength Training
Tu Intervals: 5x0.5mi @ ½ Marathon
2 mile warmup, then 5 x 0.5 mile at goal pace with 400 meters recovery jog, then 2 mile cooldown. One extra rep over week 1. The dose should still feel like work you can repeat next week, not a dig. Goal pace, not faster. The rest between reps is what lets the work stay sharp from first to last. Aim for even efforts across the set rather than a fast opener. If form held to the final rep, the session did its work.
W Strength Training
Th 5.5mi Easy Run
5.5 miles at conversational effort. First true recovery day of the plan. The job is to land at the next hard session with the legs ready to spend, not still spending. Run by feel. The legs will tell you the right speed, and it will likely be slower than the watch wants.
F Rest
Sa 9mi Long Run
9 miles easy. Long run grows by 1.25 miles. Same conversational effort as week 1. The distance is the only variable that changes. The long run stretches endurance by keeping you out there longer, not by going faster.
Su 6.5mi Medium-Long Run
6.5 miles easy. Legs may feel heavy at the start. That is the point. Settle in for the first mile, then let the rhythm come back. Hold a conversational effort the whole way, even when the legs invite more.
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Plan Strengths
- Goal pace lives in your legs from week 1 onward. By race week, 7:57 has been rehearsed in fourteen different sessions before you see the start line.
- The 15-mile long run in week 7 carries three miles at race pace in the middle. That is the only time race effort lives inside a long run, and it is enough.
- Eight back-to-back weekends sit across the plan, every week except the deload at week 4. The pattern teaches the legs to roll into Sunday already tired, the same condition the closing miles of race day produce.
- Two mesocycles separated by a real cutback at week 4. Intervals lengthen across both, from half-mile reps to mile reps, so each block has a different ask.
- Two-week taper trims volume across two cutback weeks. Race-pace memory holds because intervals stay on the calendar through race week.
- Strength sits on Monday and Wednesday and never drops, even through the taper. Two sessions a week under a 48-mile peak keeps hip and core durable enough to run mile 12 with the same posture as mile 2.
Weaknesses & Gaps
- Hill work is absent. If your goal race has rolling terrain, add a short hill block on the easy day in mesocycle one.
- Forty-eight peak miles asks for sleep and food in proportion. The plan does not script either, but neither is optional.
What's missing
Hill repeats never appear on the calendar. If your goal race rolls through real hills, swap the easy run in one of the early build weeks for a short hill session of six to eight repeats up a moderate grade. The build holds no tune-up race or time trial, and doesn't need one; the evidence doesn't tie mid-build races to better race-day outcomes, and the weekly goal-pace work is your read on progress. If you enjoy racing, a short one fits in the week 5 or 6 easy slot. The last gap is one the plan cannot fill for you. Peak weeks reach forty-eight miles with two strength sessions on top of them, and that combined load only works on adequate sleep and adequate food. The plan assumes you will arrange both, and at this volume that arrangement is what protects the work you put in.
What the science supports
Race-pace specificity hinges on physiology
Every Tuesday you rehearse 7:57 per mile, starting with half-mile reps and building to full miles. Week 7 brings a single rehearsal inside the long run: three miles at goal pace bracketed by six easy miles on either side. The body learns what 7:57 feels like when it's already tired. Running goal pace repeatedly across different workout types teaches the nervous system to execute that pace when the race arrives.
Pierce et al. 1990; Hewson & Hopkins 1996; Jones et al. 2021
Periodization beats constant-load training
Five phases guide ten weeks. Base lets the rhythm settle. Sharpen brings a deload at week four. Peak hits the heaviest load, then a two-week taper leads into race week itself. Long runs climb from 8 miles to 15. Intervals grow from 4x0.5 to 8x1 mile reps. Tempos extend from 4 to 6 miles. Then volume drops away while goal-pace work stays on the calendar to keep sharpness alive as you approach the start line.
Bradbury et al. 2020; Tønnessen et al. 2014; Casado et al. 2022
Long runs are essential for marathon
Long runs grow from 8 miles to 15 across the plan, with the peak hitting two miles beyond race distance. You'll run them back-to-back with a medium-long run the next day almost every week, teaching the legs to carry you when they're already tired. Week 7's peak sits at 15 miles, with three miles at race pace in the middle. That exposure to extended running builds the kind of durability that holds pace when the race itself moves into mile ten.
Toresdahl et al. 2021; Jones & Kirby 2025; Casado et al. 2019
Strength training improves running economy
Monday and Wednesday you'll strength train, holding two sessions a week even through the taper. Strength work won't make you bulky or slow. It makes you efficient. Stronger legs produce more force with the same oxygen cost, and that efficiency difference compounds across 13.1 miles. The plan reserves time for this because running-specific strength is what keeps the hips and posterior chain durable under forty-eight peak miles a week. It gets built gradually through the build and maintained through the taper.
Blagrove et al. 2018; Balsalobre-Fernández et al. 2016; Šuc et al. 2022
Tapering improves race performance by 2-6%
Week nine and ten pull volume down while keeping goal-pace work live. The long run drops from 15 to 10 miles. The interval session repeats its week-eight dose (8x1 mile) once more to confirm the legs respond the same way at lower fatigue. That's the signal the taper is working. By race week, mileage shrinks to just short runs and a shake-out. You arrive at the start line with the fitness you built and the freshness to express it.
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