Sweltering Summer Ultra

Pittsfield, United States • 9 Aug 2025

The Sweltering Summer Ultra is an annual running event held at Clapp Park in Pittsfield, Massachusetts. The 13th edition features an 8-hour race on a certified 0.355-mile dirt and cinder track, with runners switching directions halfway through. Participants can run or walk as many laps as they choose, with chip timing and a live leaderboard provided.

The event includes a well-organized aid station with no-contact bottle refills, snacks, and pizza. Awards are given for overall and age group winners, plus lifetime and mileage achievements. A 12-hour virtual race option supports the AYJ Fund, benefiting children with cancer.

The race is part of the BURCS BADASS series. Visit the organization's website for the most recent information.

Race information

8 hr
8-Hour
Visit the organization's website for the most recent information.
Trail runs nearby

The Edge Hill Trail Race, scheduled for 2025, is a collaborative event with the Franklin Land Trust, celebrating the scenic trails and dirt roads of Ashfield. This race emphasizes a relaxed atmosphere, encouraging participants to enjoy the natural beauty while challenging themselves physically and s..

The Free to Run Trail Races, hosted by the Berkshire Ultra Running Community for Service (BURCS), take place in Pittsfield State Forest, Massachusetts. Scheduled for June 21, 2025, the event offers three distances: 15K, 25K, and 50K ultramarathon. The challenging course features a double-loop figure..

The Notchview Ultra, held in Windsor, Massachusetts, is a multi-day ultrarunning event featuring various race durations including 100.7 miles, 72 hours, 48 hours, 24 hours, 12 hours, and 6 hours. The course is a scenic, well-maintained 1.9-mile perimeter loop trail around Notchview, with runners pas..

The Jug End Loop Ultra, held at Jug End State Reservation in Egremont, Massachusetts, is a challenging 6-hour ultra running event featuring a 4.2-mile loop course through woods, fields, and an apple orchard. Each lap includes approximately 830 feet of elevation change, with equal uphill and downhill..