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The Château de Chenonceau spans across the river Cher with reflections on the water.
Race Finder

IRONMAN 70.3 Tours Metropole - Loire Valley.
Your best day in Tours.

The Cher, Loire Valley roads and a run close to the river give Tours an attractive shape. The bike looks like a day for steady power, not a tour of every château at full speed. And the precise race distance matters more than the view when you plan your splits.

Loire Valley, Château de Chenonceau over the river Cher.

Race day
6 Jun 2027
Course
Swim 1.9 km · Bike 90 km · Run 21.1 km
Historical air
12–25°C

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 Tours could look like.

Let’s build your race

Let’s build your race.

Your age and race category help me estimate where that performance could place you. They don’t determine how fast I think you can race.

Change units

The châteaux will still be there after the race.

On earlier Tours courses, the swim followed the Cher and the ride headed through Loire Valley countryside before a riverside run. The 2027 half may take a different line. Without a final map, prepare for changing open-road conditions and leave specific turn-by-turn predictions alone.

Cher River, provisional half swim

Find a steady line before leaving the water

Use the first minutes to find clean, controlled rhythm in the Cher.

Seed honestly. Settle into rhythm.

Loire Valley roads, first bike stage

Hold sustainable power before the château roads open up

The flat roads can feel easy. Hold the opening cap and take fuel before it feels urgent.

Cap the first effort. Fuel by plan.

Château d'Ussé corridor, secondary route

Fuel regularly without assuming a 90 km course

Keep the same controlled pressure along the Cher rather than trying to make time late on the bike.

Keep cadence steady. Finish planned nutrition.

Île Balzac and Cher banks, prior run setting

Give the first riverside lap room to settle

Use the river and park landmarks to reset before committing to pace.

Control the first aid station. Keep the first loop easy.

Cher waterfront, run finish pending

Only increase effort once the real course is established

Only progress when your form and fuel have held through the first loop.

Check posture. Choose the last move late.

What to check in race week

Check whether the 2027 bike covers 87.3 or 90 km before choosing split targets. Confirm the actual event date, Cher swim, bike turns, Île Balzac run layout and aid. The separate 2026 full-distance race is not a course map for this half.

Forecast statusToo early for a forecast

A race-day forecast is not meaningful yet; check back closer to the event.

Temperature
12.4–24.7°CDew point centred on 11.0°C
Wind and gusts
11.5 km/hGusts up to 37.4 km/hPrevailing direction NNE
Rain likelihood
Up to 80%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.

Make your finish prediction and I can send this plan to you in race week.

Build the legs.
Practise the decisions.

A finish range gives you something to work towards. The preparation is specific to this race: river navigation, disciplined riding through Loire villages and a controlled half-marathon opening form a sound race plan once the measured course is known.

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 Tours.

Explore coaching
Trisutto certified80/20 Endurance certifiedBrett Sutton’s Coach the Coach programme

Training on your own? See half distance plans

Course sourceOfficial course

PhotographySusanne Jutzeler, suju-fotoPexels Licence · resized, cropped and monochrome