Styrkeproven
June 14 - June 15, 2025 -
Trondheim Norway
Styrkeprøven, also called Den Store Styrkeprøven (The Great Trial of Strength), is a 520 km (323 mi) long bicycle cyclosportive which starts in Trondheim and finishes in Oslo, Norway. It was first held in 1967, initiaded by Erik Gjems-Onstad and has taken place since then in late June every year since.
In 2012 the record time was 12.51,02.
Routes: 323 miles
Difficulty of Greatest Route:
F - Ultra Distance and Climbing for events well over 100 miles
Time Zone: Eastern Standard Time (EST)
Facilities
Support for Participants
Route Signposted 
First Aid
Emergency Contact No
Roving Mechanical Support
Features
Electronic Start/Finish Timing
Finishing Medals
Results Within 24 Hours
Photos
Nutrition
Feed / Aid Stations
Event Links