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25.05.2026 New claim submitted for Backwards Stair Climbing, 1 Hour 09.05.2026 New claim submitted for Mental Calculation, Division 09.05.2026 New claim submitted for Mental Calculation, Square Roots Keywords: (e.g football beer mat)	Listed below are the verified claims for the record listed. Running 5 miles with leg irons - Current world record 1. Cynthia Morrison, The Great Cindini (USA) ran 5 miles in 2:22 hours, wearing leg irons with a 16 inch twist chain between each leg cuff. She walked the perimeter of The Old Jail, St. Augustine, Florida, for 16.9 laps on 22 Dec 2006 in West Palm Beach, Florida.     The Book of Alternative records - World records, record breakers and more!