4 upcoming Marathon Swimming competitions from 18 Sept 2026 to 3 Jul 2027 - world championships, world cups and finals with dates and locations, in the order they happen. For what has already been achieved, see the Marathon Swimming records and firsts .
When Upcoming All events -- Jump to a month -- February 2026 May 2026 June 2026 July 2026 August 2026 September 2026 October 2026 November 2026 December 2026 January 2027 February 2027 March 2027 April 2027 May 2027 June 2027 July 2027 August 2027
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