Brighton, Michigan (United States of America) - "Winter Trail Fest Eastside". Some call it the Winter Trail Fest, some just think What The F...?! We will be down at Island Lake for a winter trail half marathon and 5 mile race and we will be hoping for some of the nastiest and true WTF conditions possible! You will truly be earning your WTF Medal, WTF hoodie, and other WTF swag (WTF winter hats are used for age group awards)! Don't worry too much though, the late morning start will give you a chance to relax and enjoy the morning before tackling winter trail miles. In June, you have the opportunity to join us for the Summer Trail Fest Ultra and Half Marathon to earn the connecting STFU medal! www.runsignup.com/Race/MI/Brighton/WinterTrailFestEastside

Middleville, Michigan (United States of America) - "Winter Trail Fest Westside". Some call it the Winter Trail Fest, some just think What The F...?! We will be down at Yankee Springs for a winter trail Half Marathon and 5 Mile race with a river crossing! We will be hoping for some of the nastiest and true WTF conditions possible! The afternoon start will give you a chance to relax and enjoy the morning before tackling winter trail miles. In June, you have the opportunity to join us for the Summer Trail Fest Ultra and Half Marathon to earn the connecting STFU medal. New in 2025: The 5 Mile has a ruck option! There is an option to avoid the river crossing by adding on extra distance. We also have Winter Trail Fest Eastside in Brighton, Michigan without the river crossing. www.runsignup.com/Race/MI/Middleville/WinterTrailFest

Milford, Michigan (United States of America) - "Moonlight Bootlegger 5K - Metro Detroit". 2025 marks year thirteen of Moonlight Bootlegger Metro Detroit! Since 2012, thousands of people have enjoyed the amazing tealight lit course, live bluegrass music, and refreshing cocktails at this Moonlight Bootlegger 5K. For those new to Bootleggin', this race takes place after dark. Athletes must have a headlamp or flashlight. The trails at Maybury are amazing and mostly free of roots to trip on. We will put out 300+ tea lights along this well-marked trail so you never have to worry about getting lost. www.runsignup.com/Race/MI/Northville/BootleggerDetroit15

Laingsburg, Michigan (United States of America) - "Summer Trail Fest Ultra, Half Marathon & 5 Mile". Annual STFU at Sleepy Hollow State Park! Taking place in the middle of Michigan, Summer Trail Fest Ultra and Half Marathon (STFU) is convenient for those on the east and west side of the State. With well-groomed trails and extremely generous cutoff times (20 min/mile for the Ultra and 45 min/mile for the Half), this is a spectacular race for beginners, season veterans, or athletes looking for a personal best. When you cross the finish line, celebrate at the beach with our post-race STFU barbecue party while cheering for participants on the course! www.runsignup.com/Race/MI/Laingsburg/STFUandHalf

Petoskey, Michigan (United States of America) - "Wolverine State 100". Trivium Racing has been dreaming of producing this epic event for years, and we're thrilled to finally unveil our exciting new race plan. This event will feature a 100-Mile, 100-Kilometer, and 50-Kilometer Ultra, as well as a relay option for the 100-Mile. The highlight of this course will be crossing the top of Michigan's lower penninsula from Lake Michigan to Lake Huron. The 100-Mile course will be point-to-point, beginning in Petoskey and concluding in Alpena. The 100k course will also be a point to point race finishing in Alpena. Our 50K race will feature an out and back course from Alpena that will have very manageable cutoffs and great running surfaces! Athletes will navigate a variety of terrain, including single-track trails, gravel roads, limestone paths, and seasonal roads. While no 100-mile race is ever easy (and we know you wouldn't want it to be), our goal is to make this event as approachable as possible for first-timers while still delivering a rewarding experience for seasoned vets. Special awards will be given to those finishing the 100-mile race in under 24 hours, and we'll also have a generous cutoff time to encourage more participants to tackle this incredible course. You can expect frequent, well-stocked aid stations approximately every 5 to 8 miles to keep you fueled and supported throughout the race. www.runsignup.com/Race/MI/Petoskey/WolverineState100