Oslo Half Marathon

Oslo, Norway · September 18, 2027
partly-cloudy-day61°·63° high·Light·Dry
7
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Race Day Weather

partly-cloudy-day
61°at start
63° high
Light
Dry
Your goal
0:00:00

Comfortable temps

Starting at 61°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Light winds shouldn't be a major factor for pacing. Moderate humidity at 68% is worth noting for effort level, especially in later miles.

Race day forecast available in 342 days
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Pace Calculator

Distance: 13.1mi
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Race Plan

Get your personalized Oslo Half Marathon race plan

True Effort pacing, weather-adjusted mile splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.

Race Conditions
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The Oslo Half Marathon covers 21.1 km through the Norwegian capital, starting and finishing at Radhusplassen in front of Oslo City Hall. The route passes Skoyen, Frogner, and the Oslofjord waterfront at Akershusstranda and Aker Brygge, then continues by Akershus Fortress, Bislett, and the Karl Johan boulevard before returning to the finish. The course gains roughly 175 meters of elevation over its distance.

Race weekend

Saturday, September 18
1:00 PMHalf Marathon (13.1 mi)
4:00 PM10K Wheelchair Race (6.2 mi)4:20 PM10 for Grete (10K) (6.2 mi)
Area Map

Course Map

FAQ

When is the 2027 Oslo Half Marathon?

The 2027 Oslo Half Marathon will be held on Saturday September 18, 2027.

What is the time limit for the Oslo Half Marathon?

The time limit for the Oslo Half Marathon is 3.5 hours.

What will the weather be like for the 2027 Oslo Half Marathon?

The forecast calls for a high of 63°F and a low of 50°F with a 10% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.

Historical Weather

Based on 5 years of data
Avg Temp
58°F
L:57° H:58°
RunScore
8
Conditions
Rain Freq
40%
2 of 5 yrs
Wind7mph
Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
56°/58°Light
8
2025
partly-cloudy-day
59°/59°Light
7
2024
cloudy
56°/57°-
7
2023
cloudy
54°/56°-
8
2022
cloudy
60°/61°-
8