Ready to race? Register directly on the official race website — opens in a new tab.
Register →Save this race to your wishlist, set a registration reminder, and build a full training plan on Trehko.
2026 Trinity Health Seaway Run is a half marathon running event held in Muskegon, MI on Jun 27, 2026. It is a Boston Marathon qualifier. The course has a hilly profile.
Trehko tracks registration status, entry fees, and deadlines for 2026 Trinity Health Seaway Run and thousands of other endurance races. Use the app to set a registration reminder and build a training plan tailored to race day.
Browse by discipline: