DateExpected
Mid October 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Parc des Expositions de Castres
Castres, Tarn
Countdown
October
The middle route: 100 km with 1,800 m of climbing, a proper day out without the full 130. Like its siblings, it finishes at the summit of the Côte des Salvages.
Key facts
01Licence, medical certificate or accepted FFC health attestation required
02E-bikes are not permitted
03Riders born in 2008 may enter any sportive course
Create a free training plan for the La Castraise 100 km
7-day free trial, no card required
The course
The route
Castres
Distance100km
Total climb1,800m
StartElevation
0 kmDrag map to rotate97.0 km
Weather
Mid-October, Castres
20°CTypical high
10°CTypical low
-3°CColdest in 20 years
30%Days with rain
Highs around 20°C and lows around 10°C, but it has dropped to -3°C. Rain on 30% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserUnion Cycliste Castraise
Websiteunioncyclistecastraise.com
Instagram@la_castraise
Running since2001
Training
Training for the La Castraise 100 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 La Castraise 100 km plan targets
Typical sessions
100 km with 1,800 m of climbing
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Sustained climbing repeats on real gradients
Group rides for drafting and bunch-riding skills
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 La Castraise 100 km plan.
7-day free trial, no card required.
Other races at La Castraise
More events in October in France
100 Miles Pyrénées MéditerranéeExpected Early October 2027 · Bolquère→Boulieu TrailExpected Early October 2027 · Boulieu-lès-Annonay→Ultra Trail des Montagnes du JuraExpected Early October 2027 · Métabief→Cézanne Cyclo ClassicExpected Early October 2027 · Aix-en-Provence→Gravel is MineExpected Early October 2027 · Wallers→La Franco-SuisseExpected Early October 2027 · Les Rousses to Métabief→
