Trenton Summerfest Half Marathon, 8K, and 5K – Trenton, MI 2026

Trenton Summerfest Half Marathon, 8K, and 5K – June 27, 2026 Looking for a fast, scenic early-summer race in Southeast Michigan? Trenton Summerfest Half Marathon, 8K, and 5K on June 27, 2026 features USATF-certified courses, flat and runner-friendly routes, and a welcoming atmosphere for every pace. The Half Marathon starts early to help athletes beat the heat, while the 8K and 5K begin a bit later—ideal options whether you’re chasing a PR or enjoying a fun run or walk with friends. Run through Elizabeth Park, along the river in Trenton, and—if you're taking on 13.1—through Gibraltar on a course known for smooth organization, great support, and well-stocked aid stations. With low elevation gain, beautiful scenery, and strong community energy, this is a perfect way to kick off your summer racing season. Why runners choose Trenton Summerfest: All distances are USATF-certified Early Half Marathon start helps athletes beat the heat PR-friendly Half Marathon with just 96’ of elevation gain