Woldumar Trail Run 2026

The Woldumar Trail Run is an annual early-morning trail event at Woldumar Nature Center in Delta Township, Michigan. Runners and walkers use natural paths through the woods and along the Grand River, making the race feel like a run through the center’s land rather than a road race adjacent to a park. The event is the nature center’s largest fundraiser of the year, attracting about 250 participants. It originated from an idea by members and volunteers. The field now includes adults on the main trail routes and younger runners in the Delta Dental Muskrat Mile, a one-mile course designed for aspiring athletes.