Jun 10, 2023 at 8:00 AM

Rock River Canyon 50K

Valley Spur Lodge, M-94

Munising MI, 49862


Event Facebook page

Entry Fee $85
(Lowest or Early Registration)

Entry Fee 2 $95
(Highest or Late Registration)

Prize Money: no


  • 50K
  • 27K

Type: Ultra

Participant Limit: 100

Starting Elevation: 900

High Point: 1016

Percent of the course on un-paved trails: 85%

First Year of the Event: 2019

Men's Record: Mike Peter (Cass City, MI), 5:26:53

Masters Men Record: Mike Peter (Cass City, MI), 5:26:53

Women's Record: Rachel Gibson (Albion, MI), 5:18:05

Masters Women Record: Rachel Gibson (Albion, MI), 5:18:05


The Rock River Canyon 50K is a magnificent route through high country and remote river valleys south of Munising. The course begins at the Valley Spur Lodge south of Munising and follows a rarely followed section of the North Country Trail to AuTrain and then on to the Rock River Canyon Wilderness.

Runners then turn back for an eastward retrace back to Valley Spur. Single track comprises 26 miles of the route while dirt forest road makes up the remaining 5. Runners who want to immerse themselves in the wild backcountry of the Michigan’s Upper Peninsula on Zen quality single track have now found their experience.

With 4390 ft of elevation change over 31 miles runners will enjoy frequent but not overwhelming ascents and descents. I would describe it as highly runable and even a fast course for the experienced ultra runner. It’s moderate, non-technical terrain make it an ideal step up for the marathoner wishing to try their first ultra.



Past Event Dates

Held on Jun 10, 2023

Held on Jun 11, 2022

Held on Jun 12, 2021

Held on May 24, 2020

Held on May 26, 2019

Event Results

View 2019 Results