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ChallengeOct

Challenge Vieux Boucau

Vieux-Boucau-les-Bains, Nouvelle-Aquitaine, France

4.5/5
2 athlete reviews

The race

Family-friendly Challenge race on the French Atlantic coast — flat, fast, and beginner-friendly.

Course

SwimLake

Single-loop swim in the Lac Marin de Vieux-Boucau — protected saltwater lagoon, warm and calm.

Bike300 m (984 ft) elev.

Flat, fast bike through the Landes pine forests along the Atlantic coast.

Run50 m (164 ft) elev.

Flat run around the marine lake and seaside promenade.

Historical weather · Oct

Actual monthly averages from the last 3 years (Open-Meteo). Real race day may vary.

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Water temp uses athlete-reported values first, then official race data, then the marine archive (sea swims, measured at the nearest offshore point). Values tagged est. are modelled from recent air temperature for lakes and rivers, where no observational data exists.

Athlete reviews

2 total
Swim
5.0
Bike
4.5
Run
4.0
Organisation
4.5
Dan
Raced 2026 · 10/12/2026
5/5 overall

4h22: 33' swim 2h19' bike 1h20' run Very well organised race in a beautiful area. The race was delayed by 30 mins which was also the case last year I believe so not sure what that's about. The swim is nice, it's a loop of the lake before doing an aussie exit near the swim start and then heading straight across to the opposite bank where transition is located. T1 is quite short and quick, nothing to wash your feet though and it's really fine sand so worth packing a towel in T1 bag. Bike course is mega mega fast, my bike computer picked up 300m but I'm not sure if there's even that much as there are very few actual hills on the course. Road quality is great. Only issue is they're open roads and this does mean the volunteers let cars through at some junctions and then you find yourself stuck behind them for a while (I averaged 39kph so in small villages limited at 30kph, cars couldn't keep ahead of me and slowed me down). Besides that, fast and smooth, you spend 95% of your time in a deep TT position. T2 is quick enough, same place as T1. The run is 4 laps of the lake (4km) + a straight into the village and back out again. It's a beautiful course, not too crowded and good aid stations. The total distance I measured was a bit short though (20.3km). One big issue is the lack of toilets, plenty of athletes jumping in bushes due to the huge lack of toilets (none in Transition and just 2 sets of 3 over the entire run course, all without loo roll). Besides that, the course is flat and the support is great. Finish line: It's a nice finish line arch, it's a bit "basic" if you're used to IM finish lines but it's still very nice and the post race food and care is very good too. There are NO showers despite what the athlete guide says so worth noting. The duffel bag, tshirt, medal and bike bottles were all a nice touch and are just as good quality as any IM goodies. Definitely a race I would do again.

Swim5
Bike4
Run5
Org4
Em
Raced 2025 · 8/13/2026
4/5 overall
Swim5
Bike5
Run3
Org5

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