La Grésylienne

About the Event

Mark your calendars for a beautiful autumn run in Savoie! La Grésylienne returns to Grésy-sur-Aix on Sunday, September 27, 2026, offering three trail distances, two hikes, and a unique biathlon contest. This beloved community event, organized by passionate volunteers, showcases the stunning natural beauty of the region with forest paths and panoramic views of Lac du Bourget. Perfect for competitive runners and casual participants alike, it's a day dedicated to sport, nature, and warm, convivial celebrations. Join the tradition for a memorable athletic experience in the heart of nature.

Races Offered

Trail 32.17 km

Sep 28, 2025

straighten

Distance — 39.5K

terrain

Type — —

timer

08:00

Trail 20 km

Sep 28, 2025

straighten

Distance — 20K

terrain

Type — —

timer

08:40

16 km

Sep 28, 2025

straighten

Distance — 16K

terrain

Type — —

timer

09:00

9.7 km

Sep 28, 2025

straighten

Distance — 9.7K

terrain

Type — —

timer

09:00

Trail 9.7 km

Sep 28, 2025

straighten

Distance — 9.7K

terrain

Type — —

timer

09:00

Weather History

These values represent the 3-year monthly averages for September in Grésy-sur-Aix.

thermostat Temperature

13.8° / 22.0°

wb_sunny Feels like

13.9° / 21.9°

light_mode Avg sunshine hours

9h 3m

water_drop Avg rainfall

4.8 mm

ac_unit Avg snowfall

—

air Avg wind speed

4.5 km/h (Light breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (3.5)

humidity_mid Humidity

78.5%

wb_twilight Sunrise

07:15

nightlight Sunset

19:46

About Grésy-sur-Aix

Learn more about the host city, Grésy-sur-Aix.

Grésy-sur-Aix is a commune in the Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France. It is 4 kilometres away from Aix-les-Bains. It is part of the urban area of Chambéry.