Running
Toughest 50 km
50 km
Toughest Oslo
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Trail in Norway, Oslo
Distances
Running
Toughest 25 km
25 km
Trail
Main race
12 km
Start: 11:00 AM
Trail
XPLORE
12 km
Start: Sep 6, 10:00 AM
Running
Toughest 10 km
10 km
Trail
8 km
8 km
Start: 11:00 AM
Running
Family
5 km
Trail
Family
2 km
Start: Sep 6, 11:00 AM
429.00 NOK
About
Toughest Oslo is an obstacle course race in the Oslo forest around Holmenkollen, featuring varied terrain and the iconic ski slope finish. It is the leading OCR event in the Nordics with options for elite athletes and beginners.
Catering & aid stations
Food and drink available at the event area. Menu varies per event with options for all tastes. Water stations after halfway and at finish.
Pacers
Pacers set target times per start wave (Pacerflaggen) for the Main race and XPLORE to help runners manage effort. Refer to event schedule for assigned pacer times at the start.
Results
View official resultsTypical weather in Oslo
Monthly averages based on historical data (2000–present).
Jan-3°-8°
↑ 09:07
↓ 15:48
Feb-2°-7°
↑ 07:58
↓ 17:06
Mar3°-5°
↑ 06:34
↓ 18:20
Apr8°0°
↑ 06:01
↓ 20:35
May14°5°
↑ 04:40
↓ 21:49
Jun18°10°
↑ 03:55
↓ 22:43
Jul20°12°
↑ 04:23
↓ 22:25
Aug18°11°
↑ 05:33
↓ 21:12
Sep14°8°
↑ 06:47
↓ 19:40
Oct8°3°
↑ 07:58
↓ 18:10
Nov3°-1°
↑ 08:16
↓ 15:49
Dec-1°-6°
↑ 09:15
↓ 15:12
Route maps
What's included in entry
- Access to the obstacle course
- Timing chip and official results
- Finisher medal
- Event insurance
Prices & signup
- Family429.00 NOK
FAQ
What are the physical requirements?
No specific requirements — courses are designed so anyone can complete them at their own pace.
Do I need to complete all obstacles?
No — all obstacles are optional.
How long are the courses?
Approximate distances are published on the event pages; local deviations may occur.
Is there an age limit?
Children must be at least 5 years old for Family; minors require parent/guardian permission.
Do I need to know how to swim?
No — swimming ability is not required; water obstacles are optional.
Last updated: Jun 6, 2026, 12:29:04 AM
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