Dirty 30 Gravel Grinder

Dirty 30 Gravel Grinder is held in Saranac, Michigan, on March 27, 2027. The core of the day is gravel riding, with routes of 130 miles, 50 miles, 30 miles, 16 miles and 6 miles, and there are two running events alongside them: a 10K and a 5K.

For runners, the appeal is the setting rather than the length. The 10K and 5K let you race in the morning and then spend the rest of the day around a gravel event, or split the entries across a household so riders and runners share the same trip. Neither running distance demands a long build: four to six weeks of consistent mileage covers the 5K, and eight weeks with a weekly tempo run sets you up to race the 10K. If you ride as well as run, the shorter gravel routes and a run entry make a reasonable double.