Koala Bottle Harbison Half Marathon & 5K

Get ready to challenge yourself at the Koala Bottle Harbison Half Marathon & 5K, set for Sunday, July 12, 2026, in Columbia, SC. This annual event, organized by Marathon Majic, promises a true South Carolina trail running experience within the scenic Harbison State Forest. Runners can choose between a demanding 13.1-mile half marathon or a spirited 5K, both kicking off with early starts at 7:00 AM and 7:10 AM, respectively.

Known for its "fabulously hot on the trail" conditions, typical race day weather includes highs around 96°F and lows around 72°F, with an 18% chance of precipitation. The course itself is a testament to trail running, featuring 100% un-paved trails with rolling hills, packed surfaces, and challenging singletrack sections complete with roots, rocks, and other natural obstacles. Participants will navigate through a beautiful forest of mixed pine and hardwood, with opportunities to spot local wildlife like white-tailed deer. Aid stations along the route are well-stocked, offering cold water, Gatorade, various fruits, and even pickle juice to help runners combat the conditions and fuel their efforts. Every finisher receives a stylish T-shirt and a well-deserved medal, commemorating their accomplishment on this uniquely challenging and environmentally sustainable course.