40K trail training plan
40K trail training plan: a block built on your vert
Almost a marathon's distance, with climbing on top. Four to seven hours depending on the course and the runner.
- Distance
- 40 km
- Typical gain
- 1,200–2,500 m
- Density
- 30–63 m/km
- Taper
- ≤ 21 days
Typical elevation gain of races at this distance, rounded. Enter your own race's: the plan is built on it.
What a 40K trail asks of you
To the engine a 40K is still a short trail: the long-distance line sits at 42 km. But with 2,000 m of climbing it weighs like 60 km on the flat, and that weight sizes the long run and the taper. The challenge is absorbing runs of several hours without giving up the week's recovery.
What the plan does at this distance
Climbing builds up to your race's
Your weekly vert rises from base to peak, capped at your race. A 40K trail with 1,200–2,500 m of climbing means 30–63 m per km: the density your trail runs aim for on the last loading week, within the climbing available where you train.
A long run measured in time
The engine counts 100 m of climbing as one flat kilometre: this 40K trail weighs like 52–65 km on the road. The long run aims at a share of the race time it derives for your level: all of it up to 2 h, 80% up to 4 h, 65% up to 6 h, half beyond. A ceiling per level keeps it in check.
Speed keeps its place
Under 42 km, race intensity stays close to the road. The block keeps sharp quality sessions while it builds climbing volume.
A taper sized on the race
Up to 21 days, shorter when your estimated race time is short: 10 days under 2 h, 14 days under 4 h. Volume and climbing drop, intensity stays alive.
Recovery after the line
After the race the plan holds 21 days of recovery before training starts again. The window is computed from the real distance and climbing, not the kilometres alone.
Questions about training for a 40K trail
What runners ask before they commit.
It depends on where you start more than on the distance. Uptrail sizes the block from your race date and your current training. When time is short, it tells you what remains achievable instead of compressing a full preparation.
A missed easy run is simply not made up. A missed key session, on Pro, reshapes the week: the session moves to a realistic slot, volume and climbing rebalance, and hard days keep their spacing.
No. A marathon is trained at pace; a 40K trail is trained on time on feet and climbing. The plan measures the long run in time, not kilometres, and gives climbing work the room a marathon plan gives race-pace work.
Train for a specific race
Your 40K trail, prepared week by week.
Enter your race, its elevation and the days you can run. The block is built, then reworked when a key session falls through.