Worldwide Half Marathon Calendar – Manually Vetted Races | HalfMarathon.net 2,411 events | HalfMarathon.net

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Jun

13

2026

Laingsburg, Michigan (United States of America) - "Summer Trail Fest Ultra 50K, Half Marathon, & 5 Mile". Summer Trail Fest Ultra (STFU) is back for its fifth year on Saturday, June 13, 2026, at Sleepy Hollow State Park in Laingsburg, Michigan. This summer trail race is the perfect mix of beginner-friendly and PR-worthy, with smooth, well-marked singletrack and generous cutoffs that make it accessible for both new and experienced trail runners. Whether you’re ready for your first 50K ultramarathon, looking to nail a faster half marathon, or want to test yourself on the 5-mile trail race, STFU delivers a one-of-a-kind Michigan trail running experience. The course features about 90% well-groomed trails with minimal technical terrain, making it an ideal choice for anyone stepping up to longer trail distances. With 20:00/mile cutoffs for the 50K and 45:00/mile cutoffs for the Half Marathon, you’ll have plenty of time to finish strong. Aid stations are well-stocked with water, electrolytes, gels, and real food options, so you can run without a crew and still be fully supported. After the finish line, the fun doesn’t stop. Stick around for a post-race cookout and BBQ featuring burgers, hot dogs, sides, and plenty of trail camaraderie. In 2026, spectators can even purchase picnic tickets, so your family and friends can join the celebration too. Even better, STFU is the summer counterpart to the February Winter Trail Fest (WTF) Half Marathon & 5 Mile in Brighton and Middleville. Each year, the STFU and WTF medals are designed to magnetically connect into one giant finisher medal. You can also register through the WTF + STFU bundle to save 15% off each race while guaranteeing your spot in both events. Why run STFU? Beginner-friendly trail race with smooth, scenic singletrack, distances for everyone: 50K, Half Marathon, and 5 Mile (run or ruck), generous cutoff times (20:00/mile for 50K, 45:00/mile for Half), well-stocked aid stations so you can run without a crew, excessively well-marked course that keeps navigation stress-free, post-race cookout and BBQ celebration at the finish line, medals that magnetically connect with Winter Trail Fest for a full-season accomplishment, central Michigan location convenient to both east and west sides of the state. Summer Trail Fest Ultra, Half Marathon, and 5 Mile is more than just a race; it’s a celebration of summer trails, community, and the joy of finishing something big. Register today and get ready to STFU and Run on June 13, 2026! https://runsignup.com/Race/Info/MI/Laingsburg/STFUandHalf

Jun

27

2026

Trenton, Michigan (United States of America) - "Trenton Summerfest Half Marathon, 8K, & 5K". Kick Off Summer Running with Trenton Summerfest. Kick off summer with fast miles, river views, and festival energy at Trenton Summerfest featuring a Half Marathon, 8K, and 5K. Start your season strong on a course built for speed and good vibes. The Half Marathon begins early to help you beat the heat, offering a flat, scenic route with just 96' of elevation gain. The 8K adds rolling hills through beautiful Elizabeth Park before bringing you into downtown Trenton, and the 5K is perfect for both PR chasers (the record is 15:24.07!) and anyone looking for a fun run or walk with friends. As the second race in the Trivium Mega Medal Series, your finisher medal connects with five others to form one massive, display-worthy piece. Whether you’re racing for time, community, or summer momentum, this is where the season starts. https://runsignup.com/Race/MI/Trenton/TrentonSummerFestival

Nov

08

2026

Caseville, Michigan (United States of America) - "Rock CF Thumb Coast Marathon, Half Marathon, & 5K". CASEVILLE TO PORT AUSTIN, MICHIGAN. Point-to-point, fully paved course on Michigan’s Thumb Coast. The Rock CF Thumb Coast Marathon, Half Marathon, and 5K returns to Michigan’s Thumb on Sunday, November 8, 2026, following an unforgettable first year. This second edition brings runners back to the flat, fast, USATF-certified course stretching along the Lake Huron shoreline. The Marathon is a Boston Qualifier, and both the Marathon and Half Marathon will once again feature pace teams from Beast Pacing to help you dial in your goal. Starting in Caseville and finishing in downtown Port Austin, this point-to-point race blends speed, scenic coastal views, and small-town hospitality, making it an ideal fall race-cation. Why run Thumb Coast? Fast & Flat – PR- and BQ-friendly Marathon & Half; Pace Teams – reliable support from Beast Pacing; Cool Temps – crisp November race weather; Run for a Cause – every entry supports the Rock CF Foundation; Awesome Swag. https://runsignup.com/Race/MI/PortAustin/TheRockCFThumbCoastMarathonHalfMarathonAndK

Nov

27

2026

Commerce Township, Michigan (United States of America) - "Black Toenail Friday Half Marathon and 7.5 Miler". Thanksgiving Weekend Tradition: Kick off the holiday season with a late morning trail race! Crisp air, evergreens, and the quiet beauty of Michigan’s late Fall create the perfect backdrop for your Black Toenail Friday run. Whether you’re chasing a PR or soaking up the vibes, this race is your chance to leave the holiday stress behind and make the most of your long weekend. Leave the crowds to the mall and join us on Friday, November 27, 2026, for a Half Marathon or 7.5 Miler. With an 11:00 AM start, you can enjoy Thanksgiving dinner and still sleep in. The well-groomed trails of Proud Lake State Recreation Area are easy to navigate, and parking is conveniently close to the start/finish line. This isn’t just a race; it’s a tradition. Don’t miss your chance to be part of Michigan’s favorite Black Friday running event. Register now, claim your spot, and join a community of runners who know there’s no better way to kick off the holiday season than on the trails! https://runsignup.com/Race/MI/CommerceTownship/BlackToenailFridayHalf



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