Running Plan Review Buena Vida Run Club's 18-Week Run a Faster Marathon (5 days)
Plan at a Glance
Only four of the 89 runs in this marathon build ask for marathon effort, and all four come in the last five weeks. That surprises a lot of runners. The pace you race at is not the pace that makes you stronger.
The most common mistake in marathon training is running most days at the same medium effort. Easy days creep faster, harder days lose their punch, and long runs leave you worn out. Here, the week has a clear shape instead. Tempo runs are comfortably hard, an effort you could hold for about an hour. Intervals are short repeats at the effort you could race a 5K or 10K at today, with easy jogging between. Those two runs build your speed. Everything else stays easy enough to talk through, and marathon effort only shows up late as practice for race-day rhythm.
Buena Vida built these 18 weeks for someone who has raced a marathon or something close and now runs about 24 miles a week. You run five days a week, with one strength session on the calendar and three lighter weeks along the way. There is no target time. You train by effort, race by feel, and meet the clock at the finish.
Below is the full Buena Vida review. Every plan is held to the same detailed, 31-point benchmark, with each measure traced back to peer-reviewed sports-science research and proven coaching best practices.
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Our Review
Most runners who have finished a marathon remember the miles after 20 better than the start. You want the next one to hold together there. With 18 weeks and 5 days a week, an intermediate runner gets room to build that, and this plan uses the room well. You start near 24 miles a week and climb to 41.5 in the biggest week, with a lighter week after every 3 of building.
Each building week gives you three jobs and spaces them so each one meets fresh legs. Tempo, a steady hard run at roughly the pace you could race for an hour, grows from 2.5 miles to 4.5. Intervals, short repeats with easy jogs between, run near the effort of a 5K or 10K race. The long run teaches your legs to keep going, from 10 miles up to 20. Easy days sit between all three, so no hard run arrives on tired legs.
The gaps are small. Tempo and repeats both start in the second week, just as the running grows, and each cutback ends with a quick climb back up. Late in the build, long runs of 19, 19, and 20 miles come back to back. Strength sits on the calendar once a week with nothing said about what to do.
Best for a runner with a marathon or something close behind them, already running about 24 miles over 5 days. If you can run only 3 or 4 days, or race day is nearer, a smaller or shorter build fits better. If you have the months and the mornings, run this one.
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Structure
Does the plan build you up smartly?
In 3 steady blocks, each closed by a lighter week, your running grows from 24 miles to 41.5 without one big leap. The first 9 weeks are base, where tempo and repeats at 5K and 10K effort get you used to hard running. The next 6 weeks stretch the long run from 16 miles to 20 and add marathon effort late. Then 3 weeks of less running bring you to the start line.
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Prevention
Does the plan protect you from injury?
Mostly, with two moments to watch. Tempo and repeats both begin in the second week as the running grows. The week after each cutback climbs back fast, and a fartlek arrives on one of those jumps. If your legs feel heavy then, drop 1 or 2 repeats and add them back later. Every hard run opens with an easy warm-up, no two hard days touch, and strength appears weekly.
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Flexibility
What happens when you miss a day?
When a week shrinks, keep the long run and the tempo, and let an easy run or the repeats go first. Every workout carries a priority, so the choice is already made for you. Because hard runs are set by effort, coming back after missed days means no pace to chase, just the effort that feels right that morning. If illness takes a whole week, repeat it before moving on. Any bigger reshuffle is yours to plan.
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Readiness
Will the plan deliver race-day fitness?
A 20-mile run and 3 long runs of 19 miles or more wait behind you by race day, which is what the late miles ask for. Tempo reaches 4.5 miles, and repeats at 5K and 10K effort run through most building weeks. Marathon effort comes in 5.5 and 6 mile runs and a 6-mile block inside the 20. Those runs teach rhythm, while the tempo and repeats carry the strengthening. The last 3 weeks cut your running from 41.5 miles and keep strides and a short marathon-effort run in.
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Variety
Are the workouts varied enough?
You'll meet 18 different hard sessions, so the weeks rarely feel alike. Repeats range from 800 m to 1600 m at 5K and 10K effort, and tempo runs grow a half mile at a time. A fartlek, speed play with 30-second surges and 90-second easy jogs, breaks up the base. Strides, short relaxed bursts of speed, finish 16 of the easy runs.
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.
You picked a long runway to a marathon, and the opening days are gentle for a reason. They give you room to find the rhythm of running five days a week before anything asks you to push. Pay attention to the small things now: how your legs wake up, how you sleep, and which routes you enjoy. Those details become a map you can read for months. Start easy and let the shape of the week become familiar.
M 3.5mi Easy Run
3.5 miles easy to open the first of eighteen weeks. Run at a pace where you could talk in full sentences the whole way. A first run can feel too small to count, yet this is where the habit of five running days a week begins.
Tu 3.5mi Easy Run
3.5 miles easy, the second day in a row. Legs that felt fresh yesterday may feel a little flat today, which is common on back-to-back days. Hold a conversational effort even if the run ends up slower than Monday's.
W 3.5mi Easy Run
3.5 miles easy, three days running. The trap on a third straight day is speeding up to get it over with. Let the run take as long as it takes, and enjoy the break from running tomorrow.
Th Strength Training
F 3.5mi Easy Run
3.5 miles easy on the day before your first long run. Think of it as a loosener. Finish feeling like you could have kept going, because tomorrow asks for 10 miles and wants the legs you save today.
Sa 10mi Long Run
10 miles easy for the first long run of the plan. Start slower than feels necessary and keep a conversational effort from the first step to the last. Early in a marathon block, the long run is about getting used to being out there for a while. What it builds is patience, the habit of an unhurried first hour. Carry water or plan a loop past a fountain. Months from now you will start a much longer morning the same way, and it begins with one like this.
Su Rest
The running is getting real now. Harder efforts have joined the week, and your breathing and legs may tell you about them in ways that feel new. There is no need to be brave about it. Take the hard parts with care and keep the gentle days truly gentle. Feeling a little exposed at this stage is common, and that feeling tends to fade once the pattern stops being new. You belong in this block.
M 4.5mi Tempo Run with 2.5mi @ Tempo
Warm up 1 mile, run 2.5 miles at tempo, and cool down 1 mile. Tempo means comfortably hard: an effort you could hold for about an hour, speaking only in short phrases. This first one is a calibration, so start the tempo stretch a touch easy and let the effort build. Tempo is one of the two runs each week that do the most to make you stronger at the marathon. It went right if the final half mile felt strong and controlled rather than desperate.
Tu 3mi Easy Run
3 miles easy the day after your first tempo. Some tightness in the calves or hips is normal after harder running, and it often eases within the first mile. Keep this one chatty so tomorrow's repeats start on fresh legs.
W Intervals: 5×800m @ 5k
Warm up 1 mile, run 5 by 800 meters at 5K effort with 400 meters of easy jogging between, then cool down 1 mile. 5K effort is the effort you could race a 5K at today: hard, breathing heavily, and still in control. Intervals are short repeats with rest between, which lets you spend more time at that effort than one nonstop run would. The first rep usually comes out too fast because it feels easy. Aim for five reps that feel alike, with the last as strong as the first.
Th Strength Training
F 3mi Easy Run
3 miles easy to round out a week with two harder days in it. A longer Saturday sits ahead, so there is nothing to gain from pressing today. You have full permission to make this the gentlest run of the week.
Sa 10mi Long Run
10 miles easy, the same distance as last Saturday. This time the run follows a week that added tempo and repeats. You may feel those days in your legs over the final few miles, and that tiredness is exactly what long runs teach you to carry.
Su Rest
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All 18 weeks in the app
Daily coaching notes, nutrition guidance, reschedule logic, and strength placement.
Plan Strengths
- You'll know how comfortably hard feels over 4.5 miles, after tempo runs that grow by a half mile at a time.
- At the start line, 26.2 miles won't feel foreign, since you'll have run 20 with 6 at marathon effort in the middle.
- Every fourth week eases off, which gives heavy legs time to recover before the next climb starts.
- Because each hard run sits between easy days, you meet every tempo and every round of repeats on rested legs.
- Strides, short relaxed bursts of speed after 16 easy runs, keep your legs used to moving quickly on slow days.
Weaknesses & Gaps
- Sore legs are most likely in the opening fortnight, when tempo and repeats both begin as the week grows.
- Coming out of each cutback, a niggle can start as the week jumps back up, once with a new fartlek on top.
- Tiredness can pile up late in the build, when long runs of 19, 19, and 20 miles come back to back.
- If you have no strength routine, the weekly session may go unused, since it comes with no guidance.
- Your legs can feel flat early in the taper, the lighter stretch before race day, which holds nothing faster than strides.
What's missing
Four gaps have simple bridges. In the second week, run the tempo as written and cut the repeats to 3, then give them their full count the week after. Coming out of each cutback, trim 1 or 2 repeats if your legs feel heavy. When the 19, 19, and 20 mile long runs come back to back, cap the first 19 at 17 or 18 miles if the one before it left you sore. The first taper week has nothing faster than strides, so a midweek easy run with 4 to 6 one-minute pickups at 10K effort keeps some rhythm without adding much running. Strength is scheduled with no content, so bring a routine you already know or ask a qualified trainer to set one.
What the science supports
Start at the mileage you already run, not the peak
A plan should start at the running you already do, not the bigger number it builds toward. Then the opening weeks feel like normal weeks rather than a reach. This plan opens at 24 miles a week, the same figure it asks you to be running already. From there it climbs to 41.5 miles through the build, so every step up starts from where your legs already are.
Nuuttila et al. 2022; Roberson et al. 2018; Ramskov et al. 2018
A taper makes you 2-6% faster on race day
A taper, a planned stretch of less running before a race, improves race results by about 2 to 6 percent compared with training straight through. It works best when some faster running stays in. Here your running steps down from 41.5 miles to 33.5 and then 23.5 across the last 3 weeks. Strides and a 2-mile run at marathon effort keep some quick running in your legs.
Recovery weeks turn training into fitness
Easing off every third or fourth week lets fatigue clear so the body absorbs the running already done. Runners who do it stay healthier than those who keep piling on miles. This plan eases off every fourth week before the taper. Those weeks drop to 22.5, 28.5, and 25 miles. The long run shrinks in those weeks too, to 10, 12, and 10.5 miles, before the climb picks up again.
Recreational marathon pace sits below threshold
For most everyday marathoners, race pace sits 5 to 15 percent easier than the pace you could race for an hour. So running at marathon effort does not do the work of a true tempo run. This plan gives that work to tempo runs that grow from 2.5 to 4.5 miles. Marathon effort is kept for a few rehearsals late in the build, including 6 miles inside the 20-mile run.
Jones et al. 2021; Pierce et al. 1990; Smyth & Muniz-Pumares 2020
Strides and sprints make you more efficient
Short, fast efforts such as strides help you spend less energy holding a given pace. Trained runners have cut about 2 to 5 percent off their 5K times with them. The payoff comes from smoother running, not from bigger lungs. Here 16 easy runs finish with 4 strides of 100 meters, relaxed bursts that cost little and keep quick running familiar through the base, the build, and the taper.
Paavolainen et al. 1999; Turner et al. 2003; Eihara et al. 2022
Get the full plan in the app
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