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34,045EventsUnited States2026
Toughest Oslo
Distances
2km
4km
8km
16km
Start location
About this race
Toughest Oslo is one of Europe's finest obstacle races, running through trails, ski slopes, and forest terrain. The race finishes at the legendary Holmenkollen, where you'll conquer the Holmenkollen hill – a brutal climb with views over the entire city. Both first-time runners and elite athletes will find their challenge in this terrain.