450km, unmarked, 190 hours — the world's most remote loop ultra.
Other trail races within 80 miles
The Tor des Glaciers is the world's longest unmarked ultra trail — 450km with 32,000m of vertical gain circling the Valle d'Aosta on forgotten mountain paths. Limited to 200 runners who have previously finished the Tor des Géants in under 130 hours, it demands total navigational self-sufficiency across 26 alpine refuges and 3 life bases with no course marking at any point.
Recommended for seasoned ultrarunners
Courmayeur, Valle d'Aosta, ItalySeptember 11, 2026
Must complete an approved qualifier event within the qualification window
Find a qualifying raceMust have completed TOR330 - Tor des Géants® in under 130 hours (120 hours for the 2012 edition; finish after Gressoney OUT disqualifies for 2015).
| Location | km | Elevation |
|---|---|---|
Start Start | 0.0 | 1,234 m |
Finish Finish | 450.0 | 1,232 m |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Multiple sections exceed 3,000m. Weather can shift instantly from hot valley conditions to freezing temperatures, strong winds, rain, and ice at high elevation.
Sub-zero temperatures and snow or ice possible on high-altitude sections. Crampons and full waterproof layering may be required. Race direction can mandate additional gear at any time.
Extreme weather variability: hot and humid in lower valleys, potentially stormy and freezing on ridges above 3,000m, especially overnight. Conditions can change rapidly and locally.
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