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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 1 Mile with Swim Fins - Current world record 1. Samalya Schäfer (Germany) ran a mile while wearing swim fins on both feet in 5:33.8 minutes on 13 November 2015 at the Impossibility Challenger Games in Berlin, Germany.     The Book of Alternative records - World records, record breakers and more!