Unbound Gravel 200
📍 Kansas, Flint Hills, USA
gravel
Date
3–6 June 2027
Distance
200mi · 100mi · 50mi · 25mi
Elevation
2,800 m
Difficulty
gravel
Michigan's Coast to Coast Gravel Grinder
Michigan, USA · 27 June 2026
Difficulty: 4/5 — Very hard
The Michigan's Coast to Coast Gravel Grinder offers challenging 204-mile and 100-mile gravel routes across Michigan, connecting two freshwater coasts with rugged adventure and heart-pumping segments.
Visit official site →- Distances
- 328km · 161km
- Elevation
- 1,981 m
- Surface
- gravel, dirt
- Typical W/kg
- 2.8–3.6
Rider fit
Who it's for
This event is for experienced gravel riders and ultra-endurance enthusiasts seeking a unique, long-distance challenge across diverse Midwestern terrain.
Who will struggle
Novice riders, those unprepared for sustained long efforts on varied gravel and two-track surfaces, or anyone lacking robust endurance training will find this race exceptionally difficult.
Training focus
Training should concentrate on long-distance endurance, gravel-specific bike handling skills, and nutritional strategies for extended periods in the saddle.
Are you ready for this race?
Compare your W/kg to see how you stack up against this race's typical level — and which races fit you best right now.
FAQs
What are the available race distances and routes?+
The race offers a 204-mile course from Au Gres on Lake Huron to Ludington on Lake Michigan, and a 100-mile loop starting and finishing in Ludington, exploring the Manistee National Forest.
What kind of terrain can I expect?+
Riders will navigate fast gravel roads and signature two-tracks through diverse Michigan landscapes including farmlands, grasslands, rolling hardwoods, and the majestic Manistee National Forest.
What support options are available for the 204-mile route?+
Participants in the 204-mile route can arrange their own shuttle and support, or utilize paid services including shuttle, drop bags, and rescue. The 100-mile is a loop from Ludington.
What are the main start and finish locations?+
The 204-mile race begins on the sunrise shores of Lake Huron in Au Gres and concludes on the sandy beaches of Lake Michigan in Ludington. The 100-mile race starts and finishes in Ludington.
Is there specific guidance on what gear to bring?+
Yes, the official website provides a 'Bring With You' section within the Rider's Guide, which offers recommendations for essential equipment.
How challenging is this event?+
Described as a rugged adventure with heart-pumping challenges and an all-out push across Michigan, the race is designed to be a significant test of endurance and grit, particularly the 204-mile distance.