September ultramarathons in Michigan, United States

Trail course weaving through Michigan forests, century-old white pines, camp areas, Potawatomi, BBT, and Waterloo Pinckney trails amid rolling landscapes.

Rocky and root-filled Marquette County trails with over 12,000 feet of climbing, unpredictable weather, minimal support, and nighttime finishes

200 miles from Muskegon to Traverse City, passing historic ships, lighthouses, rolling hills with autumn foliage, apple orchards, and Grand Traverse Bay

Rocky, muddy trails with tricky river crossings, unmaintained sections, and big hills in an attractive natural setting

Loop course through old-growth forests, rocky Lake Superior shoreline, scenic ridgelines, and cascading waterfalls in Michigan’s Porcupine Mountains

50 miles through Porcupine Mountains backcountry: steep climbs, technical descents, muddy rooted trails, ridgelines, waterfalls and Lake Superior shoreline.

Mixed forest roads and single-track trails through Manistee National Forest, featuring sandy stretches, rocky segments, and the challenging Powerlines section.

West Michigan 100-mile route with over 29,000 feet of elevation gain and loss

Trail routes through Heritage Park’s autumn scenery, 13.1 or 31 miles, new course design, mostly unpaved paths, wide-ranging cutoff times