Grand Rapids Half Marathon
Race Day Weather
Cool start — fast day potential, warming through the race
A cool 45°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 58°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 68% is worth noting for effort level, especially in later miles.
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Race Info
The Grand Rapids Half Marathon runs 13.1 miles on the Sunday of race weekend, starting and finishing at the David D. Hunting YMCA beside the Grand River. The route follows the opening miles of the marathon course through downtown, then continues along Wealthy Street and the Butterworth Park trails by the river before turning back toward the YMCA. The course is mostly flat.
