Oak Ridge to Kingston Express O2K Marathon
Race Day Weather
Cool temps, headwind early
Runners will face temperatures starting at 41°F and rising to 50°F by race's end. With a headwind in the first half and a tailwind in the second, pacing adjustments will be crucial, especially during miles 1-13. Humidity is moderate at 70%, so it's advisable for runners to stay hydrated and adjust their pace conservatively. Pre-race conditions feel cool, so a throwaway layer may be helpful while waiting.
Pace Calculator
Get forecast alerts for Oak Ridge to Kingston Express O2K Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
The Oak Ridge to Kingston Express is a Boston-qualifier-focused marathon and half marathon in Oak Ridge, Tennessee, held in late February or early March. Both start on North Jefferson Circle and follow the Oak Ridge Turnpike, which has a bike lane and shoulder. The marathon is an out-and-back on a USATF-certified course with under 600 feet of climbing, and the half is a point-to-point with under 400 feet. Entry is capped at 50 runners and there are no shirts or awards. Source
