Famous Idaho Potato Half Marathon
Race Day Weather
Comfortable temps, warming through the race
Starting at 63°F, heat will be a factor from the gun — go out conservative and stay on top of hydration. Temperatures rising to 77°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Famous Idaho Potato Half 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 Famous Idaho Potato Half Marathon race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
Race Info
The Famous Idaho Potato Half Marathon covers 13.1 miles on the Boise Greenbelt, starting and finishing at The Morrison Center on the Boise State University campus. The course is flat and paved and stays on the path system along the city's river corridor. It runs on the Saturday of race weekend, after the marathon start and before the 10K and 5K.