Greensboro, North Carolina (United States of America) - "Nat Greene's Revenge Triathlons and Duathlon". Nat Greene's Revenge is North Carolina's premier fall triathlon, duathlon, and aquabike event, offering athletes a unique chance to race both on-road and off-road multisport courses all in one morning. Held at the scenic Lake Brandt Marina in Greensboro, NC, this race delivers a dynamic and inclusive experience for all types of endurance athletes, from first-timers to seasoned competitors. New for 2026, all racing will take place in the morning, allowing for a smooth, unified race schedule and more time to connect with fellow athletes post-race. Race options On-Road Triathlon: 800m swim, 12.5-mile road bike, 3.25-mile run On-Road Duathlon: 2-mile run, 12.5-mile road bike, 3.25-mile run On-Road Aquabike: 800m swim, 12.5-mile road bike Off-Road Triathlon: 800m swim, 14.5-mile mountain bike, 5K trail run. https://runsignup.com/Race/NC/Greensboro/LakeBrandtTriathlons

Petoskey, Michigan (United States of America) - "Wolverine State 100". From Lake Michigan to Lake Huron, The Journey Continues. After an unforgettable debut in 2025, Wolverine State 100 returns for year two on October 10–11, 2026. Runners, relay teams, and crews will once again take on the rare chance to cross Michigan’s Lower Peninsula from lake to lake, racing from Petoskey to Alpena on a route built for grit, beauty, and pure endurance. Choose your challenge: 100 Mile – the full Lake-to-Lake journey, point-to-point across the state; 100K – a point-to-point test of strength that starts at Tomahawk Lake Campground and finishes in Alpena; 50K – an early Sunday morning out-and-back from Alpena with smooth surfaces, generous cutoffs, and the same Wolverine spirit; 100 Mile Relay – team up and conquer the distance together. Expect a mix of singletrack trail, gravel and limestone roads, and quiet seasonal roads through Northern Michigan’s forests and farm country. Trails are technical; expect roots, rocks, and leaves that require concentration and reward you with pure Michigan trail running. You'll run on packed dirt, sandy seasonal roads, grass, and pavement. Aid stations every 5–8 miles will keep you fueled, supported, and moving toward the Huron shore. While no 100-miler is ever easy, Wolverine is designed to be challenging yet approachable, a race that welcomes first-timers and rewards veterans alike. Finishers earn custom awards, with special recognition for those who break the 24-hour barrier on the 100-mile course. The Wolverine community made history in its first year. In 2026, we’ll keep building it one mile, one finisher, and one wild adventure at a time. https://runsignup.com/Race/MI/Petoskey/WolverineState100

Agua Dulce, California (United States of America) - "Spacerock Trail Race". Spacerock: the final trail running frontier. These are the voyages of trail runners around the world. Your mission: to explore strange new trails, to seek out new life and new experiences, to boldly run where no one has run before. Experience the exotic trails and sights of the world-famous Vasquez Rocks Natural Park in Southern California. Known as the backdrop for popular TV shows and movies including Star Trek, The Flintstones, Battlestar Galactica, Planet of the Apes, and many of our favorite classic westerns films. Now get a spectacular experience running the trails at the SPACEROCK Trail Race! Distances: 5K / 10K / 15K / Half Marathon. www.spacerocktrailrace.com