Rock River Canyon 50k Trail Run

Rock River Canyon : Munising, Michigan : June 6, 2026

Rock River Canyon is a trail running event held near Munising, Michigan, with the start at Valley Spur Lodge. Distances offered:

• 50K - about 31 miles; includes 26 miles of single track.
• 27K - about 16.5 miles; 100% single track, turnaround at AuTrain aid station.

The 50K is an out-and-back on the North Country Trail to the Rock River Canyon Wilderness and back to Valley Spur. The route follows single track and dirt forest roads and includes frequent ascents and descents. Distances may vary slightly each year due to permitting. Entrant limit is 100 runners. Registration closes June 1. There are no refunds; entries may be transferred for a fee.

Course details and logistics

There are six aid stations located at approximately 4, 8.4, 12.8, 18.2, 22.6, and 27 miles. Runners are required to carry a 20 oz water bottle or a functional hydration system that can be refilled. Aid stations provide cold water, an electrolyte drink, energy gels, and electrolyte capsules. Parking is available at Valley Spur. Drop bags can be stored in a tent near the start/finish and will be returned to the ferry boat store if left on the island. All finishers receive a commemorative award; podium and age-group awards are given. Dogs are allowed in the start/finish area but not on the course. Visit the organization's website for the most recent information.