How many weeks to prepare for 80K ultra?

For an athlete at intermediate level, Endu builds a 21-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 4.4 sessions per week. You choose 4 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.

80K ultra plan, 5 sessions a week

80 km · 4,000 m D+

You have 5 slots a week. Here is how Endu spreads a 80K ultra preparation over 5 sessions: the long run is protected, the quality session comes next, easy runs fill what is left.

Create my plan for 80K ultra

weeks: 21
sessions: 92
sessions / week: 4.4
peak week: 7.7 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 3–8 · 6 wk
Build
Weeks 9–13 · 5 wk
Specific
Weeks 14–18 · 5 wk
Taper
Weeks 19–20 · 2 wk
Race week
Weeks 21–21 · 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	4.5 h	30	876 m
2	General preparation	4.7 h	31	1,065 m
3	Base	5.1 h	34	983 m
4	Baserecovery	3.9 h	27	673 m
5	Base	5.2 h	34	1,130 m
6	Base	5.5 h	36	1,221 m
7	Base	5.7 h	37	1,306 m
8	Baserecovery	4.7 h	32	848 m
9	Build	6 h	38	1,411 m
10	Build	6.2 h	39	1,501 m
11	Build	6.5 h	41	1,590 m
12	Buildrecovery	5 h	33	1,048 m
13	Build	6.7 h	42	1,756 m
14	Specific	7 h	45	1,807 m
15	Specific	7.2 h	47	1,753 m
16	Specificrecovery	5.6 h	38	1,172 m
17	Specific	7.5 h	47	2,000 m
18	Specific	7.7 h	50	1,881 m
19	Taper	5.1 h	35	1,121 m
20	Taper	4.1 h	30	429 m
21	Race week	2.6 h	21	63 m

Sample week — week 13 (Build)

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

TuesdayVery hard
🏔️ Short hills 13×1.5min
1 h 14 · 7.4 km
WednesdayEasy
🏔️ Easy trail run 39min — rolling terrain (~158m climb)
39 min · 4.6 km
FridayEasy
🏔️ Easy trail run 39min — rolling terrain (~158m climb)
39 min · 4.6 km
SaturdayEasy
🏔️ Back-to-back long run 69min · 311m gain
1 h 09 · 7 km
SundayEasy
🏔️ Long trail run ~18.0km with 746m climbing
3 h 01 · 18 km

Example generated for a intermediate-level profile (VMA 15 km/h, 5 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 intermediate level training 5 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 80K ultra

Frequently asked questions

How many weeks to prepare for 80K ultra?: For an athlete at intermediate level, Endu builds a 21-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 4.4 sessions per week. You choose 4 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.