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• Malhamdale Meander
• Mallerstang & Nine Standards Yomp
• Malvern Marathon
• Manorlands Meander
• Manx Mountain Marathon
• Marches Mistletoe Meander
• Marches Tinsel Trail
• Marlborough Downs Challenge
• Marsden-Edale Trog
• Masters Hike
• Mendip Magic Walk
• Mid Wales Mountain Marathon
• Mid-Cornwall Coastal Challenge
• Mid Week Kanter
• Millennium Way
• Mission Possible
• Monks Trod
• Moon Walks
• Moors the Merrier
• Mortimer Trek
• Myrtle Meander