Windsor Half Marathon
Race Day Weather
Cool start — fast day potential, big temp swing
A cool 50°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 81°F by later miles, so expect fading conditions as the race progresses. 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 Windsor 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 Windsor 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 Windsor Half Marathon runs 13.1 miles from The Island at Pelican Lakes in Water Valley, Windsor, Colorado. Most of the route follows paved trails out to River Bluffs and Kyger Reservoir, then climbs County Road 13 before returning through Water Valley to the finish on the Island. The County Road 13 climb is the only real hill on the course.
