Grand Rapids 10K
Race Day Weather
Cool start — fast day potential, big temp swing, moderate wind
A cool 43°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 60°F by later miles, so expect fading conditions as the race progresses. Moderate winds around 16mph may affect pacing on open sections of the course.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Grand Rapids 10K
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 Grand Rapids 10K 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 Run Thru The Rapids 10K is held on the Sunday of Grand Rapids Marathon weekend and starts and finishes at the David D. Hunting YMCA. It follows the first five-plus miles of the marathon course, running north on Seward Avenue and through downtown Grand Rapids before turning around on Wealthy Street Southwest and returning along the river. The course is flat and road-based.
