Antelope Island Marathon
Race Day Weather
Warm day, manage pace wisely
Runners will face temperatures starting at 65°F and rising to 69°F, with humidity at a moderate 56%. Wind will be light at 6 mph, primarily a headwind during the first half before shifting to a tailwind from miles 14-26. To conserve energy, runners should consider starting conservatively and adjust their pace on the climbs, especially at miles 3 and 21.
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
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 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.
