Grande Plage, 2026 beach start
Swim deliberately before reaching the channel
Use the opening to settle before committing to pace.
Seed honestly. Settle into rhythm.
Race Finder IRONMAN 70.3 Les Sables d'Olonne.
Race Intelligence · Les Sables d'Olonne, France
IRONMAN 70.3 Les Sables d'Olonne.
Race Les Sables-d'Olonne on your terms.
Few swim starts feel quite like the Atlantic beach at Les Sables, especially when the course turns into the channel used by the Vendée Globe fleet. From there, the Olonne forest and the seafront ask you to settle rather than chase the occasion.
Les Sables d'Olonne, the pier and lighthouse.
- Course
- Swim 1.9 km · Bike 90 km · Run 21.1 km
- Historical air
- 16–25°C
Your day in Les Sables-d'Olonne
What could you race?
I’m Tom, the coach behind Sense Endurance Coaching. Tell me where you are now and I’ll show you what a strong day in Les Sables-d'Olonne could look like.
The course behind your race
The channel makes a memory. Your pacing makes a race.
On the 2026 half course, athletes left Grande Plage for the harbour channel, rode through forest and marsh roads and returned to Le Remblai to run. Those are enticing race features, but a 2027 half-distance edition and its route are not yet confirmed. Train for the effort without assuming this exact course will return.
Vendée Globe entrance channel, previous course
Keep sighting precise without chasing another swimmer
The rolling route rewards steady pressure, not hard efforts into the wind.
Cap opening effort. Fuel early.
Forêt d'Olonne, previous bike stage
Set a controlled effort across changing terrain
Keep the effort even and finish planned nutrition before T2.
Let cadence rise. Finish planned nutrition.
Olonne marsh roads, previous bike return
Keep fuelling if the wind affects speed
Use the first loop to reset after the coast.
Control the first aid station. Keep the first loop easy.
Le Remblai, prior half-marathon setting
Open the seaside run comfortably
Only progress after form has held through the first loop.
Check posture. Choose the last move late.
What to check in race week
Confirm that a 2027 half-distance event is actually scheduled before planning a start line or holiday around it. The listed Thursday 1 July date remains unsupported. Once confirmed, use the half-distance map for Grande Plage, Olonne roads and Le Remblai rather than borrowing the town's full IRONMAN course.
Forecast statusToo early for a forecast
A race-day forecast is not meaningful yet; check back closer to the event.
- Temperature
- 15.6–24.5°CDew point centred on 13.7°C
- Wind and gusts
- 14.3 km/hGusts up to 42.8 km/hPrevailing direction WNW
- Rain likelihood
- Up to 85%Wet-surface uncertainty retained
Historical baseline, 2019–2025 · Open-Meteo historical archive · Updated 2026-09-13.Historical comparison only. This is not a forecast for 2027.
Race-week email is available once the organiser confirms the event date.
Prepare for Les Sables-d'Olonne
Build the legs.
Practise the decisions.
A finish range gives you something to work towards. The preparation is specific to this race: coastal open-water navigation and an economical ride through Olonne country are practised for the earlier half-distance scenario while any new edition remains unconfirmed.
I’m Tom. With Sense Endurance Coaching, I’ll build that preparation around your life, follow how you respond and adjust the work as you get closer to Les Sables-d'Olonne.
Explore coachingTrisutto certified80/20 Endurance certifiedBrett Sutton’s Coach the Coach programme
Training on your own? See half distance plans
Method
