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In page Elfstedentocht:
"In 2018, Dutch long-distance swimmer Maarten van der Weijden attempted to swim the entire eleven city tour. This attempt ended due to poor swimming conditions and illness from E. coli. The following summer he successfully completed the route, arriving at the finish in Leeuwarden on June 24, 2019. His effort raised over €6.1 million for cancer research.[citation needed]
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