Hartness Half Marathon & 5K

Hartness Half Marathon & 5K takes place on the Hartness estate in Greenville, South Carolina, on December 12, 2026. The half marathon (13.1 miles), a half marathon relay and the 5K all start at 9 a.m. The course is cross-country in style, sending runners over a mix of pavement, trail and grass, and the event is built to work for beginners and experienced racers alike. It supports Make-A-Wish South Carolina.

Mixed surfaces change how you should read your splits: grass and trail sections cost time that has nothing to do with fitness, so judge the day by effort rather than by pace. Train on something other than pavement for at least one run a week in the build-up, and choose shoes with a little grip. The relay is the friendly way in, since you split 13.1 with a teammate, and the 5K covers the same kind of ground in a much shorter dose.