Name: La Kastell Rose 2026
Start: 2026-10-04
End: 2026-10-04
Location: Chateaubriant

About the Event

La Kastell Rose, an annual sporting and charitable event held in the charming town of Châteaubriant, brings together walkers and runners to support the fight against breast cancer. In its 2025 edition, nearly 2,500 participants came together to raise over €42,000 for this noble cause. This year’s event continues to emphasize unity, sport, and solidarity as it unfolds with a variety of activities designed for all ages.
The heart of the day features 5 km and 10 km walks and runs that cater to both novice and seasoned participants alike. The route winds through picturesque landscapes offering scenic views and an enjoyable atmosphere. Additionally, children’s races are included to ensure everyone can participate in this meaningful event. Without formal timing or rankings, La Kastell Rose focuses on creating a friendly environment where the spirit of giving back is celebrated.
Every registration directly contributes to funding initiatives and associations dedicated to combating breast cancer, making each step taken that much more impactful. This year’s gathering promises an afternoon rich with emotion, camaraderie, and a shared commitment to supporting those affected by this disease.
La Kastell Rose invites you to join the community of supporters and contribute towards a brighter future in the fight against breast cancer through your participation.

Races Offered

10km Course solidaire

Oct 04, 2026

straighten

Distance — 10K

terrain

Type — Running

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35 days remaining

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10,90€

10km Marche solidaire

Oct 04, 2026

straighten

Distance — 10K

terrain

Type — Running

timer

35 days remaining

sell

10,90€

5km Course solidaire

Oct 04, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

35 days remaining

sell

10,90€

5km Marche solidaire

Oct 04, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

35 days remaining

sell

10,90€

« Même petit, j’agis » - 1200 m enfants

Oct 04, 2026

straighten

Distance — 1.2K

terrain

Type — Running

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35 days remaining

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4,30€

« Même petit, j’agis » - 1600 m enfants

Oct 04, 2026

straighten

Distance — 1.6K

terrain

Type — Running

timer

35 days remaining

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4,30€

« Même petit, j’agis » - 800 m enfants

Oct 04, 2026

straighten

Distance — 0.8K

terrain

Type — Running

timer

35 days remaining

sell

4,30€

Weather History

These values represent the 3-year monthly averages for October in Chateaubriant.

thermostat Temperature

10.3° / 17.6°

wb_sunny Feels like

7.8° / 15.3°

light_mode Avg sunshine hours

6h 56m

water_drop Avg rainfall

3.7 mm

ac_unit Avg snowfall

—

air Avg wind speed

13.6 km/h (Gentle breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Low (2.8)

humidity_mid Humidity

82.8%

wb_twilight Sunrise

08:25

nightlight Sunset

19:15

About Chateaubriant

Learn more about the host city, Chateaubriant.

Châteaubriant is a town in western France, about 350 km (220 mi) southwest of Paris, and one of the three sous-préfectures of the Loire-Atlantique department. Châteaubriant is also situated in the historical and cultural region of Brittany, and it is the capital of the Pays de la Mée.