Antelope Island Marathon
Race Day Weather
Mild temps, strategic wind shifts
Runners will face a temperature rise from 40°F at the start to 61°F by the finish, with a moderate humidity of 56%. Wind will be a factor with a headwind from miles 6 to 13, so pacing adjustments are essential during this stretch. As conditions become more favorable with a tailwind from miles 14 to 21, runners should capitalize on this to gain speed.
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.
Get your personalized Antelope Island 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 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.
