100 km · 2 October 2027
Challenge Vieux Boucau
Vieux-Boucau-les-Bains, France
The race at a glance
- Circuit
- Challenge Family
- Distance
- 100 km
- Terrain
- Road
- Swim
- 2 km
- Bike
- 80 km
- Run
- 18 km
- Date
- 2 Oct 2027
- Registration
- Open
- Swim venue
- Lake
- Average water temperature
- 20 °C
- Bike profile
- Flat
- Run profile
- Flat
- High air temperature
- 21 °C
- Low air temperature
- 13 °C
- Entry fee, from
- €239
- Altitude
- 3 m
How the day is laid out
The swim is held in a lake. The wetsuit call is made on race morning, against the temperature measured then.
The organiser publishes 2 km of swimming, 80 km on the bike and 18 km of running.
The water is usually around 20 °C at this time of year.
The bike course is flat.
The run course is flat.
Typical temperatures for the month run from 13 to 21 °C.
Against the calendar
Where this race sits among the others
Ranks are computed across every race of the same distance.
Average water temperature
20 °C · median 18 °C
The 4th warmest of the 11 100 km races with a figure, across every circuit.
High air temperature
21 °C · median 23 °C
The 2nd coolest of the 20 100 km races with a figure, across every circuit.
8
races of this distance pair a flat bike with a flat run, out of 20. 8 share the bike profile alone.
32
races across every distance fall in October, out of 354.
160
races are held in Europe. 14 of them in the same month as this one.
Questions about this race
- When is Challenge Vieux Boucau 2027?
- Challenge Vieux Boucau is held on 2 October 2027 in Vieux-Boucau-les-Bains, France. Registration is open on the official race page.
- Is a wetsuit allowed at Challenge Vieux Boucau?
- Most likely. The average water temperature is 20 °C, below the 24.5 °C limit up to which wetsuits are allowed for age-group athletes. The official call is made on race morning.
- How much is the entry fee for Challenge Vieux Boucau?
- Entries start at €239 for an individual age-group entry, before service fees. Prices rise by tier as the race fills.
Where to stay
Hotels and rentals around the race venue, for the nights around race day.
Suggested stay: 30 Sept 2027 to 3 Oct 2027
The map is provided by Stay22. Bookings are made with the provider.
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Entries are handled by the organiser
Registration and the athlete guide are on the official race page.