The Winter Gmu
Bristol, United Kingdom • 7 Mar 2026
The Winter GMU is a challenging ultra marathon held annually around the City of Bristol, featuring 30 and 45-mile loop options along the Community Forest Path. The winter edition runs the course anti-clockwise, often presenting muddy and tough conditions, contrasting with the firmer, faster summer event run in the opposite direction. The 45-mile race starts near Ashton Park School and includes four well-stocked checkpoints offering food and drink, while the 30-mile race begins at Keynsham with two checkpoints.
Participants receive bespoke medals and technical t-shirts upon finishing. The event emphasizes self-navigation, mandatory safety gear, and offers pacers targeting 9 to 12-hour finish times. It supports Avon Wildlife Trust and fosters a supportive ultra-running community. Visit the organization's website for the most recent information.