Dirty 30 Gravel Grinder

The Dirty 30 Events take place on open roads, so all Michigan road laws apply to all cyclists. Cyclists must obey all traffic signs, may not ride more than two abreast, and should not cross the center line. We've made every attempt to keep the course on gravel. However, there will be sections of pavement that are part of the course or that you will cross. Please be extra vigilant in these areas.

Cyclists, ride on the right side of the road, with the flow of traffic. Runners, run on the left side of the road, against the flow of traffic.

The Dirty 30 courses, besides the Savage Century, will be well-marked with arrows at every turn. Key intersections will be staffed by volunteers and Ionia County police. Volunteers cannot stop vehicular traffic. Volunteers can only advise riders when it is clear to continue on the route. In the end, it is still the responsibility of the rider to determine if it is safe to continue riding on the course.

‍