Trenton Summerfest Half Marathon, 8K, and 5K

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-certifiedEarly Half Marathon start helps athletes beat the heatPR-friendly Half Marathon with just 96’ of elevation gainScenic 8K with rolling varietyFast, flat 5K great for runners and walkersBeautiful routes through Downriver - Elizabeth Park, Trenton, and GibraltarWelcoming environment for all pacesStrong on-course support and great awardsPart of the Trivium Michigan Mega Medal Series   Part of the Trivium Michigan Mega Medal Series Trenton Summerfest is the second race in the six-race Trivium Michigan Mega Medal Series. Register once, run your chosen distances, and earn a medal at each event—each one connecting magnetically at year’s end to form a single giant Mega Medal. Run in-person or virtually, depending on your goals and schedule. 2026 Mega Medal Series Lineup Prove It 5K & 10K – April 18, 2026 · Milford, MITrenton Summerfest Half Marathon, 8K, & 5K – June 27, 2026 · Trenton, MIDearborn Decades 5K – August 9, 2026 · Dearborn, MIRun the 313 5K – August 22, 2026 · Detroit, MIGrowler Gallop Atwater 10 Mile & 5K – September 27, 2026 · Detroit, MIBlack Toenail Friday Half Marathon & 7.5 Miler – November 27, 2026 · Commerce Township, MI