Trail Running calendar near Chelsea 2025-2026

Bubba's Backyard Ultra is an endurance running event held in Center Conway, New Hampshire, at 564 Stark Rd. The race features a Last Person Standing format where participants run a 3.5-mile loop consisting mainly of forest singletrack, with sections of snowmobile trails, fields, and logging roads, i..

Amy’s Adventure Race for the Lake is an annual trail running event held in Bolton Landing, New York, organized by the Lake George Land Conservancy. The race features two challenging courses: a 4.5-mile and a 10-mile route, both winding through scenic forests and rugged single-track trails with rewar..

The Buck 50 is a challenging 50-kilometer ultramarathon held in Kattskill Bay, NY, along the scenic southern Adirondacks near Lake George. The course features rugged, remote trails that traverse four of Lake George's tallest peaks, including Buck Mountain, Sleeping Beauty, Black Mountain, and Erebus..

Devil's Den Ultra is a challenging trail running event held in Bradford, Vermont, featuring a rugged 10K loop on Wright's Mountain. The course offers a mix of terrain, from runnable sections to steep, rocky, and root-filled trails, including a climb to the mountain peak and a wooded downhill. Runner..

The Trapp Lodge Mountain Marathon is a challenging trail running event held at the scenic Trapp Family Lodge in Stowe, Vermont, nestled in the Green Mountains. Offering both half and full marathon distances, the race features a 13.1-mile loop with approximately 2/3 double track and dirt roads and 1/..

The Randolph Ramble is a challenging 10-kilometer trail race set in the scenic Great North Woods of Randolph, New Hampshire, located at the base of the Northern Presidentials. This self-supported race emphasizes participants' self-sufficiency, as there are no aid stations along the course. Runners a..

The Hills Are Alive Cross Country Race is set to take place at Arrowhead Golf Course in Milton, Vermont. This event features a 5K race on the scenic Laura’s Tears trail, welcoming runners aged 12 and older. Participants can pre-register online, with a fee of $15, and GMAA members receive a discount...

The Blackout 5k/10k is an exciting mountain race held at Cranmore Resort in North Conway, New Hampshire. This nighttime event features 5K and 10K distances run on a course combining access roads and ski trails, marked with reflective flagging and LED lanterns to guide participants. Headlamps are man..

RutFest, held in Williston, Vermont, is an inclusive 36-hour ultra trail running and hiking event hosted at the Catamount Outdoor Family Center. Participants run or walk two scenic trail loops, approximately 3 and 4 miles each, featuring beautiful views of Camel's Hump and Mt. Mansfield.The event en..

The Mount Ascutney Vertical Backyard is a challenging "Last Person Standing" endurance event held in Brownsville, Vermont. Participants repeatedly ascend and descend 1,209 vertical feet each hour via two course options: three laps on the 403-foot T-bar path or one lap on a longer 1,209-foot green lo..

The Jackson 5k Turkey Trot & Kids Fun Run is a Thanksgiving morning event held in Jackson, New Hampshire. It features a 5k trail run through scenic routes including the Jackson Nordic Trails and Eagle Mountain House golf course, starting at Jackson Falls Bridge. There is also a 1k Kids Fun Run for c..

The Krampuslauf is a unique running event held at the Dartmouth Skiway in Lyme, New Hampshire, featuring 5K, 10K, and a challenging 9-hour race. The course begins at the ski lodge base and includes two distinct 5K loops on Holt’s and Winslow sides of the mountain. The 5K race covers Holt’s side, whi..

Infinitus is a unique endurance event held in Ripton, Vermont, offering a range of race distances from 9 miles up to an extreme 551-mile challenge known as the 888k. Set within the scenic Green Mountain National Forest, the course provides a demanding and adventurous experience for participants. The..