Polar Night Marathon

Tromsø, Norway · January 9, 2027
partly-cloudy-day26°·26° high·Light·Rain possible
10
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Race Day Weather

partly-cloudy-day
26°at start
26° high
Light
Rain possible

Cold start — layer up, chance of rain

Runners will start in chilly 26°F conditions — dress in layers for the corral and plan to shed early. Light winds shouldn't be a major factor for pacing. There's a chance of rain, so have a backup gear plan ready. High humidity (82%) will make it harder to cool down through sweat — increase fluid intake accordingly.

Race day forecast available in 102 days
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Pace Calculator

Distance: 26.2mi
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Race Plan

Get your personalized Polar Night Marathon race plan

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

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

Race Info

The Polar Night Marathon runs through Tromsø, Norway, more than 350 km north of the Arctic Circle, during the polar night period when the sun stays below the horizon. The marathon starts on the island of Kvaløya and finishes downtown near the Culture House, a point-to-point route along the fjord. Runners cover the course under blue Arctic light, with the city's streets lit by candles and, on clear nights, a chance of seeing the northern lights overhead. The half marathon, 10K and 5K have run since 2004; the full marathon distance, sponsored as the Ishavskraft Marathon, was added in 2021.

FAQ

When is the 2027 Polar Night Marathon?

The 2027 Polar Night Marathon will be held on Saturday January 9, 2027.

What is the time limit for the Polar Night Marathon?

The time limit for the Polar Night Marathon is 5 hours.

What will the weather be like for the 2027 Polar Night Marathon?

The forecast calls for a high of 25°F and a low of 16°F with a 22% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 4 years of data
Avg Temp
23°F
L:22° H:25°
RunScore
10
Conditions
Rain Freq
25%
1 of 4 yrs
Wind14mph
Dew16°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-day
18°/22°Light
10
2025
clear-day
20°/24°-
10
2024
cloudy
27°/31°-
10
2021
partly-cloudy-day
24°/26°-
9