Register Now8th Annual Dirty 30 Gravel GrinderApril 19, 2025Route OptionsUnclean 1616 M Bike - MGRS MiniDirty 3030 M Bike - MGRS ShortFilthy 5050 M Bike - MGRS LongFilthy 5050K RunSavage Century100 M Bike - MGRS UltraSlick 66 M BikeSlick 610K RunStride 55K RunD3.0Kids RidePrepareto get dirty in:00DEvent DetailsRace Day ScheduleThe RulesOur amazingSponsorsfeaturingIvanthe TerribleLearn MoreRecapof past eventsPhotos & VideosRace ResultsInterviewwith Mitch DeYoungNutrition Tipsfrom Hammer NutritionTraining Plansby Stuart CoachingMichigan Gravel Race Series3rd race in the series