Running Plan Review Buena Vida Run Club's 12-Week Sub-1:40 Half Marathon (6 days)
Plan at a Glance
Plenty of runners sign up for the next half marathon within a week of the last one, still sore on the stairs and sure they know where the minutes went. They went somewhere past mile 10, when a pace that felt easy early began to cost more with every mile. A Sub-1:40 half means holding 7:34/mile for all 13.1 miles, and most runners at this level can already run that pace. Keeping it is the harder part.
The answer here is a weekend built in pairs. A Saturday long run that grows to 16 miles is followed by a Sunday run of up to 12, so the second day always starts on legs that already worked. Tuesdays bring goal-pace repeats that stretch from half a mile to a full mile. Thursdays bring a tempo run, held at a steady effort you could keep up for about an hour. Late in the build, the repeats join into one unbroken 6.5-mile stretch at goal pace.
It asks for 6 days of running and 1 strength session a week, starting near 38 miles and topping out at 63. The climb is broken by 2 easier weeks, and a short taper (a week of lighter running) lets you reach the start rested. The habit you bring is patience on the easy days. Most of the running is easy, and a Monday pushed because the legs feel good gets paid for at Tuesday's repeats.
Buena Vida's full review of the plan is below. We score every plan against our detailed, 31-point benchmark, with each measure drawn from peer-reviewed sports-science research and proven coaching best practices.
Similar plans
Our Review
6 days a week for 12 weeks is what this Sub-1:40 build asks. For a competitive runner already near 38 miles a week, that is a good trade. The sixth run buys a second weekend day and room to climb to 63 miles with most of it easy. It costs your full rest day, since Friday holds only a strength session.
The idea underneath is that goal pace gets learned in pieces and then put back together. Each Tuesday you'll run repeats at ⟦hm:7:34⟧ that grow from 4 × 0.5 mile to 8 × 1 mile. Late in the build, you'll hold goal pace for 6.5 miles without a break, and that weekend's 16-mile long run carries 3 more. The Sunday run after each long run teaches your legs to keep working when they are already tired.
The costs gather in 2 places. Coming out of the first cutback, the weeks climb from 37.5 miles to 59.7 in 3 steps. Then the second cutback ends in a 30% jump to 63 miles, the same week the unbroken goal-pace run makes its debut. That week also holds the 16-mile long run, longer than a half needs, with 12 more miles the next morning. Strength stays the same Friday slot every week, with nothing said about what to do.
Pick it if you already run close to 40 miles over 6 days and tend to fade late in a half. If you want one day a week with no running, a 5-day version suits you better. Give the 2 jump weeks some extra care, and the rest asks mostly for patience.
-
Structure
Does the plan build you up smartly?
Two 3-week climbs, each closed by an all-easy week, carry you from 38 miles to 63 in a sensible order. Repeats lengthen from 0.5 mile to 1 mile, and tempo stretches from 3 miles to 4.5. Goal pace moves from short repeats to one 6.5-mile run before the taper trims it back. Race week drops to less than half of the biggest week while short goal-pace repeats stay in.
-
Prevention
Does the plan protect you from injury?
Mostly, with 2 stretches that call for care. Coming off the first cutback, 3 straight weeks of climbing take you from 37.5 miles to 59.7, faster than the weeks behind them can absorb. The second cutback ends in a 30% jump that also brings the 6.5-mile goal-pace run. In both stretches, trim an easy run before touching a hard day if your legs stay heavy. Hard days never sit back to back, and every one opens with a warm-up.
-
Flexibility
What happens when you miss a day?
A lost easy day barely matters here, because 6 runs leave slack around the Tuesday repeats, Thursday tempo, and Saturday long run. Protect those 3 and let a Monday or Wednesday easy run go first. The Sunday run can shrink next, since it mostly adds miles on tired legs. Arrive below 38 miles a week and you'll find no scale-down guidance, so shorten the easy runs before anything else. After a lost week to illness, repeat it instead of jumping ahead.
-
Readiness
Will the plan deliver race-day fitness?
Yes, though the long run reaches further than a half asks. You'll log nearly 47 miles at ⟦hm:7:34⟧ across the build, including 6.5 unbroken miles and 3 more inside the 16-mile long run. That 16 miles sits beyond the 10 to 14 a half needs, and its tiredness carries into 12 miles the next morning. Capping it at 14 and moving the 2 miles to a weekday easy run keeps the week whole at less cost. A 1-week taper then keeps the repeats while the miles drop by about half.
-
Variety
Are the workouts varied enough?
The hard days keep changing shape, so few sessions feel like a rerun. Repeats at ⟦hm:7:34⟧ move from 4 × 0.5 mile through rounds of 0.75 mile to 8 × 1 mile. Tempo runs from 2.5 miles to 4.5, and goal pace also appears as unbroken runs of 3.5 and 6.5 miles. Each session spells out its warm-up, its work, and its cool-down, so you always know what the day holds.
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.
The weeks before this one built the habit, and from here the days start carrying intent. The hard days arrive early, before the routine has fully formed, and most runners at this level handle them fine. The trickier part is everything around them. Easy days on fresh legs tend to drift quicker than they should, because nothing yet feels heavy. Hold them down anyway. What the opening weeks need is a rhythm you can repeat once the weekends grow, and the slowest days set that rhythm, not the fastest.
M 6mi Easy Run
6 miles easy. Opening runs tend to come with more excitement than the day requires, and most of it leaks into the pace. Keep this one slow enough to talk the whole way. Tomorrow brings goal-pace reps, and they go better on legs that spent today doing very little. A slow start to the week costs nothing and protects everything after it.
Tu Intervals: 4×0.5mi @ ½ Marathon
Warm up 2 miles, run 4 × 0.5 mile at goal pace (7:34/mile) with 400 m of easy jogging between, and cool down 2 miles. Reps at goal pace start here, and the aim is to meet the pace rather than test it. Half a mile is short enough that 7:34/mile feels almost lazy on fresh legs. That is where most runners go wrong, running under it because they can. Lock onto the pace in the opening seconds of each rep and hold it. The session works when rep 4 looks exactly like rep 1 on the watch.
W 6mi Easy Run
6 miles easy. Yesterday's reps were short, so the legs probably feel fine, and fine is not a reason to push. Thursday's tempo is the next job. Run this at a pace where a full sentence comes out without a breath in the middle of it.
Th 5mi Tempo Run with 3mi @ Tempo
Warm up 1 mile, run 3 miles at tempo, and cool down 1 mile. The tempo days start here, so use this one to find the effort rather than chase it. Tempo sits a little quicker than goal pace, steady and controlled, with breathing deep but never ragged. Most runners open too fast on rested legs and spend the closing mile holding on. Aim for even effort across all 3. If a fourth mile at the same effort feels possible at the end, you judged it well.
F Strength Training
Sa 8mi Long Run
8 miles easy. The weekend pair begins here, and the Saturday half of it is the easier one. Run it relaxed from the opening step, since the 6 miles tomorrow are what give the weekend its point. Most runners at this level have run 8 many times, so the distance is not the lesson. Finishing with plenty in reserve is. Let the watch report the pace rather than set it.
Su 6mi Medium-Long Run
6 miles easy. Yesterday's 8 are still in the legs, and running on them is the whole idea. The opening mile often feels clumsy. Give it time, keep the effort conversational, and notice how the stride evens out once the legs accept the job.
Runners who pick a goal like this have usually come close to it already. That near miss sits in the back of the mind on ordinary days, and it can push easy runs faster than they should go. Notice it when it shows up. The time you are after gets found on the hard days and protected on the easy ones, and mixing the two is how most runners stall. The weekend pair is still modest, so use it to learn how tired legs feel at a gentle effort.
M 6.5mi Easy Run
6.5 miles easy. The weekend tends to arrive on Monday, usually around the second mile, when the stiffness should have lifted and hasn't quite. That is normal. Keep the effort low and let tomorrow's reps have the fresher legs.
Tu Intervals: 5×0.5mi @ ½ Marathon
Warm up 2 miles, run 5 × 0.5 mile at goal pace (7:34/mile) with 400 m jogs between, and cool down 2 miles. One more rep than before, at the same pace. The added rep is where attention tends to drift, because by then the rhythm feels automatic and the mind wanders to the watch. Stay with the feel of the pace instead, with breathing steady, turnover quick, and shoulders down. Keep the jogs slow enough that each rep starts from the same place.
W 6mi Easy Run
6 miles easy. Sandwiched between reps and a tempo, this run is easy to undervalue. It carries the rhythm of the week more than either hard day does. If the legs feel bouncy, let them stay that way until Thursday.
Th 5.5mi Tempo Run with 3.5mi @ Tempo
Warm up 1 mile, run 3.5 miles at tempo, and cool down 1 mile. The block grows by half a mile while the effort stays where it was. Breathing should be deep and rhythmic, with talk cut to a few words. The extra distance comes at the end, so the closing half mile is where form matters most. Run tall and keep the turnover quick when the effort starts to climb. A tempo judged right finishes with the sense that a little more was there.
F Strength Training
Sa 9mi Long Run
9 miles easy. Nothing in the plan so far has gone this far, and the extra mile mostly shows up in the closing stretch. Start slower than feels necessary. The effort should stay flat across the whole run, even if the pace drifts a little. Tomorrow's 7 miles start from whatever this run leaves behind, so leave something. Finishing fresh is the skill on display today.
Su 7mi Medium-Long Run
7 miles easy. Saturday's 9 are still sitting in the legs, and the opening minutes will say so. Resist the urge to warm up by speeding up. Most runners find the stride comes back on its own somewhere in the third mile, at the same easy effort.
Members only
All 12 weeks in the app
Daily coaching notes, nutrition guidance, reschedule logic, and strength placement.
Plan Strengths
- Goal pace becomes familiar ground, since Tuesday repeats at ⟦hm:7:34⟧ grow from 4 × 0.5 mile to 8 × 1 mile.
- You'll run 6.5 unbroken miles at goal pace before the taper, so the middle of the race holds no surprises.
- That heavy-legged Sunday run after each long run is where you learn to keep moving well while tired.
- Because hard days never touch, every goal-pace or tempo session starts on legs that ran easy the day before.
- Race week feels light without going flat, as the miles fall by about half while short goal-pace repeats stay in.
Weaknesses & Gaps
- Fatigue piles up fast after the second cutback, when the week jumps 30% to 63 miles and brings the 6.5-mile goal-pace run.
- Your Sunday after the 16-mile long run starts on drained legs, since that run overshoots a half and 12 more miles follow.
- 3 straight climbing weeks after the first cutback raise injury risk, as the running goes from 37.5 to 59.7 miles.
- Leg turnover gets almost no attention until race week, the only time strides appear on the calendar.
- No guidance comes with the Friday strength slot, which stays the same for 11 weeks and never shifts with the phase.
What's missing
A few changes would soften the rough spots without losing the build. Cap the 16-mile long run at 14 and add those 2 miles to a weekday easy run, so the Sunday that follows starts fresher. In the 3 climbing weeks after the first cutback, drop about 2 easy miles from the heaviest one. The 6.5-mile goal-pace run would sit better if a shorter 4-mile version came a couple of weeks earlier, before the second cutback. Add 4 to 6 strides of about 20 seconds to one easy run each build week, so quick running isn't new in race week. For the Friday strength session, bring a routine you already trust or get one from a coach, and keep it lighter as the race gets close.
What the science supports
Strides and sprints make you more efficient
Strides are short, fast, relaxed efforts, and they help trained runners spend less energy at the same pace. Controlled trials found running economy improved 3% to 8% over 6 to 9 weeks, with 5K times about 2% to 5% faster. In this plan, strides arrive in race week as 4 bursts of 20 seconds on 2 easy runs. There they remind the legs of quick, light running before the start.
Paavolainen et al. 1999; Turner et al. 2003; Eihara et al. 2022
Varied intensity beats a steady moderate pace
Endurance builds faster when easy running is mixed with distinctly hard efforts than when most runs sit at a steady, moderately hard pace. In trials, runners on that mix could hold a hard effort 12% to 17% longer. Here the hard days come in 2 kinds each build week, goal-pace repeats on Tuesday and tempo on Thursday. The other 4 runs stay easy, about 83% of all the miles.
Stöggl & Sperlich 2014; Rosenblat et al. 2019; Casado et al. 2022
Threshold speed is built by running
Threshold is the pace where easy effort tips into hard, and raising it takes running at that effort. Work in another sport keeps you fit but doesn't move your running threshold the same way. Thursday tempo in this plan holds that effort for 3 to 4.5 miles across the build, always as a run. If an injury ever puts you on a bike, expect it to keep you fit without fully replacing those Thursdays.
Resilience is the fourth performance factor
Researchers have begun to count a fourth factor in distance racing, which is how well you hold pace and economy late in a long effort. The idea is well argued, though ways to train it directly are still being tested. It matters most in races past about 90 minutes, and a Sub-1:40 half sits just beyond that line. Pairing each Saturday long run with a Sunday run of 6 to 12 miles gives your legs steady practice at working while tired.
Start at the mileage you already run, not the peak
A plan should open at the weekly running you already handle, not at the peak it builds toward. Studies of plans built from a measured starting point back this up. Here the opening week is 38 miles, which is the volume this plan expects you to bring. From there the climb to 63 runs through 2 lighter weeks, so the opening days feel like a normal week rather than a reach.
Nuuttila et al. 2022; Roberson et al. 2018; Ramskov et al. 2018
Get the full plan in the app
Buena Vida Run Club members get access to this full 12 week plan, plus 250 more as part of their membership. Training with Buena Vida offers detailed daily workout notes, integrated nutrition, live voice coaching, weight loss plans, and easy calendar management for life's hiccups.
Try it FREE for 7 days!