Trail Running100 Miles

Tds

24 August 2026

Courmayeur, Valle d'Aosta, Italia

Race details

Modality

Individual

Organizer

UTMB Mont-Blanc

Distance

145 km

Elevation

+9,500 m

Capacity

1,600

Start time

23:50

Terrain

Trail

Difficulty

Elite

Course profile

Mountainous

Minimum age

20+

Certified

Yes

Circuit

UTMB World Series

Event description

The TDS (Sur les Traces des Ducs de Savoie) is a premier ultra-trail event starting in Courmayeur, known for being one of the most technical and rugged races in the UTMB Mont-Blanc week. Spanning 145 km with 9500m of elevation gain, it offers runners a wild and demanding journey through the heart of the Alps.

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In the news

⛰️ Trail Running24 Aug 2026

UTMB 2026: Chasing Jornet’s Record Amidst the Shadow of a Boycott

Chamonix experiences its tensest edition yet, with the 19-hour record under threat and an elite showdown shaped by sports politics and extreme weather.

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Sport

Trail Running

Distance

100 Miles

Country

Italia

Region

Valle d'Aosta