Spinx Runfest Marathon
Race Day Weather
Cool start — fast day potential, big temp swing
A cool 49°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 71°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. Moderate humidity at 66% is worth noting for effort level, especially in later miles.
Pace Calculator
Get forecast alerts for Spinx Runfest 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 Spinx Runfest Marathon race plan
Weather-adjusted pacing, per-mile terrain splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide — all personalized to your goal and race-day conditions.
Race Info
Spinx Run Fest is an annual marathon, half marathon, 10K, and 5K held in Greenville, South Carolina, organized by the Greenville Track Club and presented by the Spinx Corporation. The marathon is a Boston Qualifier: the first roughly 15 miles follow the flat, wooded Swamp Rabbit Trail north toward Furman University and Travelers Rest, before the course returns on city, country, and campus roads to finish at Fluor Field, home of the Greenville Drive. The event has run for more than two decades.