by Freya Martin
Combining a run with obstacles that can range from a cargo net or a mud crawl to a giant slide takes an all-round set of skills.
Freya Martin is the 2015 UK champion in obstacle course racing (OCR) and came seventh in the OCR World Championships.
She started OCR racing in 2014, and now competes around the world and is a member of the British Military Fitness Race team.
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