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The Muscle Acre, Wood Street, Guildford, Surrey Picture date: Sunday July 15, 2018. Photo credit should read: Dan Law.
The Muscle Acre is an obstacle race series based in Guildford, Surrey. Established in November 2014, Muscle Acre comprises of three events throughout the year: the Winter Warmer in February, the Summer Madness in July and the Mud Slog in November. Muscle Acre attracts a diverse audience, from fun-runners and charity fundraisers to competitive OCR runners.