170K ultra plan, 5 sessions a week

170 km · 10,000 m D+

You have 5 slots a week. Here is how Endu spreads a 170K ultra preparation over 5 sessions: the long run is protected, the quality session comes next, easy runs fill what is left.

weeks
25
sessions
109
sessions / week
4.4
peak week
12.2 h

Plan structure

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

  1. General preparation
    Weeks 1–2 · 2 wk
  2. Base
    Weeks 3–10 · 8 wk
  3. Build
    Weeks 11–16 · 6 wk
  4. Specific
    Weeks 17–21 · 5 wk
  5. Taper
    Weeks 22–24 · 3 wk
  6. Race week
    Weeks 25–25 · 1 wk

Volume progression

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

WkPhaseHourskmElev.
1General preparation
7 h
481,192 m
2General preparation
7.3 h
481,430 m
3Base
7.7 h
521,516 m
4Baserecovery
6.3 h
44964 m
5Base
8 h
521,716 m
6Base
8.3 h
541,814 m
7Base
8.6 h
561,921 m
8Baserecovery
6.8 h
471,172 m
9Base
8.9 h
582,078 m
10Base
9.3 h
612,178 m
11Build
9.6 h
612,247 m
12Buildrecovery
7.5 h
501,419 m
13Build
9.9 h
612,418 m
14Build
10.2 h
632,513 m
15Build
10.5 h
652,610 m
16Buildrecovery
8.2 h
541,802 m
17Specific
10.9 h
692,769 m
18Specific
11.2 h
702,758 m
19Specific
11.5 h
712,992 m
20Specific
11.8 h
742,923 m
21Specific
12.2 h
763,188 m
22Taper
8.7 h
581,927 m
23Taper
7 h
471,345 m
24Taper
5.6 h
41673 m
25Race week
3.3 h
27100 m

Sample week — week 14 (Build)

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

  • TuesdayVery hard
    🏔️ Short hills 15×1.5min
    1 h 21 · 8.1 km
  • WednesdayEasy
    🏔️ Easy trail run 41min — rolling terrain (~166m climb)
    41 min · 4.8 km
  • FridayEasy
    🏔️ Easy trail run 41min — rolling terrain (~166m climb)
    41 min · 4.8 km
  • SaturdayEasy
    🏔️ Back-to-back long run 143min · 644m gain
    2 h 23 · 14 km
  • SundayEasy
    🏔️ Long trail run ~31.0km with 1063m climbing
    5 h 06 · 31 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.

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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.

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Frequently asked questions

How many weeks to prepare for 170K ultra?
For an athlete at intermediate level, Endu builds a 25-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 5 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.

Useful calculators

Variations of this plan