Brighton, Michigan (United States of America) - "Winter Trail Fest Half Marathon & 5 Mile - Eastside". Join Trivium for WTF Eastside! Some call it the Winter Trail Fest. Others just think, What the F?! Join us at Island Lake in Brighton, Michigan for a Half Marathon or 5 Mile run or ruck designed to embrace the messiest, most unpredictable conditions February has to offer. Snow? Ice? Slush? Perfect. You’ll earn every inch of your WTF hoodie, medal, and bragging rights. Worried about the cold? Don’t be. The late morning start gives you time to sleep in and lets the temps rise just enough before you hit the trails. This race is for those who crave a challenge. The gnarlier the conditions, the cooler the participants. WTF is all about embracing uncertainty, chasing adventure, and leaning into whatever the trail throws your way. Our ruck division is growing fast—ruckers, we see you. Then, come back in June for the Summer Trail Fest Ultra (50K), Half Marathon, or 5 Mile to complete the series and claim your connecting STFU medal. https://runsignup.com/Race/MI/Brighton/WinterTrailFestEastside?aflt_token=7LipmEOzbECERDzMZ3v2Xv14ohnqORDf

Middleville, Michigan (United States of America) - "Winter Trail Fest Half Marathon & 5 Mile - Westside". Some call it the Winter Trail Fest. Others just think, What The F?! Join Trivium Racing for a winter trail Half Marathon or 5 Mile run or ruck at Yankee Springs. Expect snow, mud, ice, and the infamous river crossing unless you take the slightly longer alternate route (+0.25 mi) to stay dry. We’re hoping for true WTF conditions, and the afternoon start gives both you and the temps a chance to warm up before you hit the trails. Earn your WTF hoodie, epic medal, and bragging rights the hard way. WTF West draws a wild mix of first-time trail runners, die-hard winter warriors, and ruckers ready to grind. Come for the challenge, stay for the bonfires, and leave with a story you’ll tell until the snow melts. Then join us in June for Summer Trail Fest Ultra (STFU) 50K, Half, or 5 Mile to complete the magnetic medal series set. https://runsignup.com/Race/MI/Middleville/WinterTrailFest?aflt_token=7LipmEOzbECERDzMZ3v2Xv14ohnqORDf

Dearborn, Michigan (United States of America) - "Dearborn Decades 5K". Kick off August racing in Southeast Michigan with the Dearborn Decades 5K, a fast, fun, USATF-certified race at Ford Field Park. Taking place August 2, 2026, this community-favorite 5K welcomes runners and walkers of all paces, families with strollers, and anyone who loves a good theme. Whether you're chasing a new PR, gearing up for fall racing, or dressing for your favorite decade, Dearborn Decades brings together everything people love about a great 5K: speed, community, nostalgia, and a course built for every type of runner. About the Race: Dearborn Decades 5K blends speed, energy, and personality. Athletes love the USATF-certified course, easy logistics, and the welcoming vibe that makes this one of the most popular summer 5Ks in Southeast Michigan. Costumes are encouraged but not required; it's a race where you can come for the PR, the outfit, or both. After you finish, stick around and enjoy the start of Dearborn Homecoming, which begins just after most participants have wrapped up their morning. Why Runners Choose Dearborn Decades 5K: fast USATF-certified course ideal for PR attempts, mid-summer timing perfect for fall marathon and half marathon training, welcoming to all paces—runners, walkers, families, and strollers—fun decade-themed atmosphere with optional costumes, easy race-day logistics including parking, packet pickup, and awards, great Southeast Michigan location with an accessible park venue, and part of multiple Trivium Racing Running Series and Club Competition for extra motivation and rewards. A finisher medal connects to five others in the Trivium Racing Mega Medal Series. Part of the Trivium Racing Michigan Running Series, Club Cup, and Mega Medal Series: Dearborn Decades 5K is part of the Trivium Southeast Michigan Running Series, the Trivium Club Cup, and the Trivium Mega Medal Series. Every finisher earns points toward season standings for themselves and their run club, and all participants receive a connecting finisher medal that links with five other 2026 races to create the full Trivium Mega Medal. 2026 Mega Medal Series: Dearborn Decades is the third race in the six-race 2026 Trivium Mega Medal Series. Register once, race all six events (in-person or virtually), and collect medals that magnetically connect into one giant, year-long achievement. 2026 Mega Medal Series lineup: Prove It 5K & 10K, April 18, 2026, Milford, MI; Trenton Summerfest Half Marathon, 8K & 5K, June 27, 2026, Trenton, MI; Dearborn Decades 5K, August 2, 2026, Dearborn, MI; Run the 313 5K, August 22, 2026, Detroit, MI; Growler Gallop Atwater 10 Mile & 5K, September 27, 2026, Detroit, MI; Black Toenail Friday Half Marathon & 7.5 Miler, November 27, 2026, Commerce Township, MI. https://runsignup.com/Race/MI/Dearborn/DearbornHomecoming5k?aflt_token=7LipmEOzbECERDzMZ3v2Xv14ohnqORDf