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04.03.2024 New claim submitted for Railway Pulling with Teeth 04.03.2024 New claim submitted for polo ball hits with a walking mallet, 1 minute 05.11.2023 New claim submitted for Leapfrogging Chain Keywords: (e.g football beer mat)	Listed below are the verified claims for the record listed. Backwards-Running, 100 km - Current world record 1. The fastest 100 km run backwards was completed by Markus Jürgens (Germany). On 4 May 2019, he completed the 100K WHEW Ultramarathon in a time of 12:20:37 hr.   Previous verified claims 1. The fastest 100 km run backwards was completed by Ralf Klug (Germany) in 21:20:31 hours on 9-10 June 2016 in Bienne, Switzerland. 2. The fastest 100 km run backwards was completed by Hassan Kurt (Germany) in 21:34 hours on 11-12 June 2016 in Niederhöchstadt, Germany.     The Book of Alternative records - World records, record breakers and more!