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Antarctic Ice Marathon & 100k

Ultra Race
BonusesScenic
Dec 13, 2026 – Dec 14, 2026 · 2 days🇦🇶 Union Glacier, Antarctica
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Key FactsRegistration open
Course
Standouts
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The Antarctic Ice Marathon is a marathon and ultra race held on snow and ice in Antarctica, with an average windchill temperature of -20C and altitude of 700 meters. It is described as the World's Southernmost Marathon.

Why attend here

At Union Glacier, the endless white expanse and towering ice formations create a surreal, otherworldly setting that feels like stepping onto another planet. December brings the austral summer, with nearly 24-hour daylight, making it the only viable window to experience this pristine wilderness. After the race, warm up with a hot drink at the camp's communal tent, where you can share stories with fellow adventurers against the backdrop of the vast, silent ice.

Distance from you
From Columbus, US to Union Glacier, AQ
~16.7h · 13,322 km

Union Glacier

typical Dec weather · 2025
13 Sat
-15°-17°
0mm4.4 m/s
14 Sun
-11°-15°
0mm5 m/s
Event Details
Course

The race takes place on snow and ice throughout, with the possibility of strong katabatic winds. The event is held at Union Glacier, Antarctica, described as an enchanting backdrop.