Trail Running calendar near Billings 2026-2027

An October endurance race in Cohoes, NY offering timed 1-, 3- and 6-hour solo and relay options. The event benefits Flutters of Hope, a nonprofit supporting individuals and families affected by eating disorders.

Run through 300 acres of scenic vineyards on a flat trail course in Peconic. Enjoy live music, food trucks, and a post-race glass of wine at this chip-timed autumn event.

A four mile trail race through Irvington Woods on October 4, 2026, with varied terrain including climbs and stairs; start and finish at Irvington High School. Registration runs March 15 to September 4 with a $40 fee.

A fall trail race day in Norfolk, CT offering 5K, 10K and a half marathon with steep climbs, private-trail sections, a cupless policy with water stations, and on-site food and beverage vendors.

A 13.7 mile trail race in Cold Spring, NY on October 4, 2026 with about 4,000 ft of elevation gain through the Hudson Highlands during peak foliage. It is an UTMB Index Race and supports the NYNJTC.

Runners climb the Empire State Building's 86 flights and 1,576 stairs to the observatory in this New York tower race on 10/06/2026. Multiple entry categories are offered with different registration windows and fees.

A four day trail event on Long Island using a 10.48 mile loop repeated to reach distances from 10 to 150 miles, with two stocked aid stations, crew access and specified pacer rules.

A community trail event on 10/10/2026 in Wilton CT featuring a 5K and a 0.75 mile accessible run or walk, event shirts, food and access to farm grounds, and a range of sponsorship options supporting employment for people with disabilities.

Experience a trail race at Mohawk Mountain Ski Resort featuring distances from 5k to a full marathon. Run through fall foliage on a course that includes steep ski slopes and the scenic Mohawk State Forest.

A single-loop trail half marathon through five parks in lower Westchester County, New Rochelle. Most of the course is on dirt and wooded trails and passes through areas with visible wildlife.

Experience Long Islands scenic Robert Moses Causeway in this multi day running event. Support local veterans while choosing between marathon, half marathon, 10k, and 5k distances with finisher medals for all participants.

A 3.5 mile trail run and walk on the scenic, flat Mill Pond Trail at Woodtick Recreation in Wolcott CT on October 17, 2026. Tiered online registration is available and a post-event meal is included with registration.

A fall trail event in Harriman State Park offering a technical **13.1M** and **10K** with steep climbs, rocky singletrack, aid stations, and adaptive support; the field is capped and proceeds support local trail maintenance.

A Halloween themed event on Clinton Road in West Milford, NJ offering a 1 mile Zombie Crawl plus 5k and 10k races. The course features zombie volunteers, themed aid stations, and a finish line festival with awards and a costume contest.

Bimblers Bluff 50K on October 18, 2026 in Guilford, CT is an off road ultramarathon over rolling forest roads and rocky single track through interconnected woodland preserves. The course does not require multiple loops and includes aid stat..

Trail and 5K races at Hillside Park on October 18, 2026, benefit a free mammography program. A kids fun run for ages 5 to 12 is included, with chili and vegetarian food and timing by Compuscore.

A fall trail race at Mt. Tom State Park on October 24, 2026, with single and relay options from 5k to 25k on rugged single-track terrain. The event supports Kestrel Land Trust and includes aid stations, medical crews, and awards.

A community trail event at Ives Farm featuring a 5K trail race, a youth team relay, and a free kids Pumpkin Dash, plus family activities and proceeds supporting local YMCA and land trust projects.

Experience a unique trail race through the forests and meadows of Muscoot Farm. Enjoy distances for all ages followed by a visit to the local farmers market with your farm buck vouchers.

A 5K Run / Walk and Kids Fun Run at Hallock State Park on October 25, 2026, with a virtual 5K option. Proceeds support the Long Island Greenway and include a post-race wine crawl with vendor specials for participants 21 and over.