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M.H.M. Open Water Swim Challenge

From Openwaterpedia

M.H.M. Open Water Swim Challenge is a 0.5-mile, 1-mile, 1.5-mile, 2-mile and 2.5-mile open water swim in Grant Ranch/Bowles Reservoir in Lakewood, Colorado, organized by Mile High Multipart]]. Wetsuits are permitted.