Antelope Island Marathon
Race Day Weather
Cool start — fast day potential, big temp swing
A cool 40°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 62°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.
Pace Calculator
Get forecast alerts for Antelope Island Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Antelope Island Marathon, once called the Layton Marathon, is held annually on Antelope Island in the Great Salt Lake, Utah. The course starts and finishes near the Antelope Island Marina, with runners traversing paved roads that feature rolling hills and stunning vistas of the lake and the island's mountainous terrain. Keep an eye out for bison, as the island hosts about 600 of them, adding a wild touch to this challenging run.
