How many weeks to prepare for 40K trail?

For an athlete at advanced level, Endu builds a 15-week preparation. If your race is closer, the plan compresses phases while keeping the taper; if it's further away, it extends the base phase.

How many sessions per week?

This example has 3.9 sessions per week. You choose 3 to 7 training days and the exact days (e.g. Tue, Thu, Sat, Sun): the plan sticks to them.

Can I follow sessions on my watch?

Yes: every session exports as .fit, the format read by Garmin, Coros, Suunto, Polar and Wahoo. Import it in your watch app and the guided workout appears on your wrist.

How much does it cost?

14-day free trial, then €7.99/month with no commitment or €59.88/year (€4.99/month). Unlimited objectives and sports.

advanced 40K trail plan

40 km · 2,000 m D+

Here is the structure Endu generates for a runner at advanced level preparing a 40K trail with 4 sessions a week. Volume, long run and intensity change with the declared level.

Create my plan for 40K trail

weeks: 15
sessions: 59
sessions / week: 3.9
peak week: 7 h

Plan structure

Periodised in phases: build the base, move to race-specific work, then taper before the race.

General preparation
Weeks 1–2 · 2 wk
Base
Weeks 3–6 · 4 wk
Build
Weeks 7–9 · 3 wk
Specific
Weeks 10–12 · 3 wk
Taper
Weeks 13–14 · 2 wk
Race week
Weeks 15–15 · 1 wk

Volume progression

Week by week: lighter recovery weeks are built in to absorb the load.

Wk	Phase	Hours	km	Elev.
1	General preparation	4.1 h	28	710 m
2	General preparation	4.4 h	30	912 m
3	Base	4.7 h	33	836 m
4	Baserecovery	3.7 h	26	575 m
5	Base	5.1 h	36	1,083 m
6	Base	5.4 h	35	1,207 m
7	Build	5.7 h	39	1,151 m
8	Buildrecovery	4.5 h	32	798 m
9	Build	6.1 h	39	1,506 m
10	Specific	6.4 h	44	1,290 m
11	Specific	6.7 h	45	1,404 m
12	Specific	7 h	47	1,519 m
13	Taper	4.8 h	32	961 m
14	Taper	3.8 h	29	320 m
15	Race week	2.5 h	20	47 m

Sample week — week 9 (Build)

Real sessions from the plan with their targets. Each session is detailed step by step and exportable as .fit.

MondayEasy
🏔️ Easy trail run 82min — rolling terrain (~287m climb)
1 h 22 · 9.6 km
TuesdayVery hard
🏔️ Short hills 10×1.5min
1 h 03 · 7.4 km
FridayModerate
🏔️ Progression run 55min
55 min · 5.5 km
SundayEasy
🏔️ Long trail run ~16.0km with 645m climbing
2 h 43 · 16 km

Example generated for a advanced-level profile (VMA 17.5 km/h, 4 sessions/week). Your plan will depend on your level, availability and feedback.

Your plan, not a template athlete's

This plan is generated for an athlete at advanced level training 4 times a week. Yours will be calibrated on your VMA, your available days and your feedback after every session. 3 minutes. 14-day trial, cancel anytime.

Create my plan for 40K trail

Frequently asked questions

How many weeks to prepare for 40K trail?: For an athlete at advanced level, Endu builds a 15-week preparation. If your race is closer, the plan compresses phases while keeping the taper; if it's further away, it extends the base phase.
How many sessions per week?: This example has 3.9 sessions per week. You choose 3 to 7 training days and the exact days (e.g. Tue, Thu, Sat, Sun): the plan sticks to them.
Can I follow sessions on my watch?: Yes: every session exports as .fit, the format read by Garmin, Coros, Suunto, Polar and Wahoo. Import it in your watch app and the guided workout appears on your wrist.
How much does it cost?: 14-day free trial, then €7.99/month with no commitment or €59.88/year (€4.99/month). Unlimited objectives and sports.