OCC

UTMB Mont-Blanc: UTMB Mont-Blanc · CCC · OCC

Orsières, Switzerland

2026 edition

61.6 kmdistance

90effort-km

×1.46effort factor

3,348 mD+

12 %did not finish

How it compares

Course	Effort-km	Effort factor
NUTS Ylläs Pallas	78	×1.18
Eiger Ultra Trail E51	77	×1.45
KAT100 Endurance Trail	108	×1.47

Editions analysed: 2025, 2026.