Redmond Harvest Half Marathon
Race Day Weather
Cool start, gradual warm-up
Runners will face a temperature increase from 56°F at the start to 68°F by the finish, with humidity at 66%. Light winds will shift from a headwind in the early miles to a tailwind from miles 3 to 7, then back to headwinds in the latter segments. To optimize performance, runners should adjust their pace early on and stay hydrated as temperatures rise.
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Race Info
The Redmond Harvest Half Marathon is a Labor Day half marathon in Redmond, Washington, organized by the Lake Sammamish Run Club and Seattle United Runners. The course is a flat, fully paved out-and-back along the Sammamish River Trail. It debuted in 2023 with a Marymoor Park start and finish; starting in 2026 the race begins and ends at Redmond Town Center.
