Trifarm 10k Autumn trail run

Trifarm 10k Autumn Trail Run is at Trifarm, Boreham, near Chelmsford, Essex. This 10-kilometre trail race is the third in the Trifarm series. The route is mostly off-road on public footpaths and bridleways, starting with a 3/4-lap of the on-site track and finishing near a bridge via a public path; the loop runs clockwise after the first kilometre and is the reverse of the summer course.

Runners start in daylight and finish in darkness, so a headtorch is recommended. Parking, water at registration, finish-area refills, and post-race food are provided. A surcharge applies for non-affiliated runners, and results count toward the 2025 championship with trophies. Visit the organization's website for the most recent information.