Kenai River Half Marathon
Race Day Weather
Cool start — fast day potential, warming through the race
A cool 43°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 55°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. Moderate humidity at 77% is worth noting for effort level, especially in later miles.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Kenai River 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 Kenai River 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 Kenai River Marathon half marathon runs 13.1 miles on the Sunday of race weekend, starting and finishing at the Kenai Chamber of Commerce and Visitor Center on the Kenai Spur Highway. The route heads out through Kenai along the Spur Highway and Beaver Loop Road before returning to the visitor center.