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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. Backwards Running, 100 m (Women) - Current world record 1. Isabella Wagner (Germany) ran 100 m backwards in 16.8 seconds on 4 August 2007 in Horgau, Germany.     The Book of Alternative records - World records, record breakers and more!