Date
Sun, 18 Oct 2026
Start
09:30
Venue
Place de la mairie, Crouzet-Migette
Crouzet-Migette, Doubs
Countdown
October
The long one of the weekend: a 21 km loop with about 1,000 m of climbing, steep enough to make you work but with five hours to get round it.
Key facts
01Finish cut-off is 14:30, five hours after the start
02Adults need a valid FFA athletics licence or a current FFA PPS
03Open to juniors and older
Create a free training plan for the Trail de la Source du Lison 21 km
7-day free trial, no card required
The course
The route
Crouzet-Migette
Distance21km
Total climb1,000m
StartElevation
0 kmDrag map to rotate21.2 km
Weather
Mid-October, Crouzet-Migette
15°CTypical high
6°CTypical low
-5°CColdest in 20 years
38%Days with rain
Highs around 15°C and lows around 6°C, but it has dropped to -5°C. Rain on 38% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
2025 results
Who finishes, and how
#RiderTimeAvg speed
01Brouillet Margot02:11:459.6 km/h
02Gahéry Clarisse02:15:479.3 km/h
03PICHOIR Charline02:28:328.5 km/h
69
Women finishers
3:07:25
Median time
6.7 km/h
Median speed
Women · 2025 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
Training
Training for the Trail de la Source du Lison 21 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Trail de la Source du Lison 21 km plan targets
Typical sessions
21 km with 1,000 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Trail de la Source du Lison 21 km plan.
7-day free trial, no card required.
Other races at Trail de la Source du Lison
More events in October in France
ALBI24HSat, 17 Oct 2026 · Albi→La Monna Lisa TrailSat, 17 Oct 2026 · Millau→Raid des AlpillesSat, 17 Oct 2026 · Maussane-les-Alpilles→Trail de la Roche d'OëtreExpected Mid October 2026 · Saint-Philbert-sur-Orne→Trails de la Vallée du ScorffSat, 17 Oct 2026 · Cléguer→BelforTrailSun, 18 Oct 2026 · Giromagny→
