Den store styrkeprøven (Trondheim–Oslo): the weather along the course
515 km · 4 220 m · road · Munkegata, Trondheim → Gjelleråsen, Oslo
Next edition
18–20 June 2027
Source: styrkeproven.no, read 13 October 2026.
Typical weather around 18 June
Average for the date ± 3 days, 2001–2025. Not a forecast.
Start times
Groups leave from 04:00 to 04:45, fastest first. The start day is not published yet.
The course
The line is drawn approximately, through the organiser's checkpoints, on OpenStreetMap roads. The official course is on the organiser's site.
About the sportive
Trondheim to Oslo, about 515 km of road over Dovrefjell, down Gudbrandsdalen and along Lake Mjøsa, ridden in one go. Starting from four in the morning with more than 500 km ahead, the field meets the morning cold on the mountain and the day's weather along Mjøsa in the same ride. Dovrefjell and Venabygdsfjellet are high and open, and the wind there can decide a rider's time.
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Typical weather: NASA POWER (MERRA-2), daily values 2001–2025 near the start, halfway and the finish. Data from the NASA Langley Research Center POWER Project.
Route line: © OpenStreetMap contributors (ODbL), drawn with BRouter through points we picked. Heights: © Kartverket (CC BY 4.0).