Fastest time to swim the Oceans Seven (cumulative)

The fastest cumulative swim time to complete the Oceans Seven is 49 hours 37 minutes 45 seconds achieved by Andreas Waschburger (Germany) between 8 September 2023 (English Channel) and 4 September 2025 (North Channel).

The Oceans Seven, the open-water swimming community's equivalent of mountaineering's Seven Summits, was first proposed in 2008 by the World Open Water Swimming Association. It consists of the following challenging waterways around the world: the North Channel between Northern Ireland and Scotland, UK; the Cook Strait between the North and South Islands of New Zealand; the Molokai/Kaiwi Channel between Oahu and Molokai Islands in Hawaii, USA; the English Channel between England and France; the Catalina Channel between Catalina Island and the southern California mainland; the Tsugaru Channel between the islands of Honshu and Hokkaido in Japan; and the Strait of Gibraltar between Europe and Africa.

Waschburger's Oceans Seven swim dates/times were as follows:

- English Channel (England to France): 8 September 2023: 6 hr 45 min 25 sec (itself a record for this swim route)

- Molokai/Kaiwi Channel (Molokai to Oahu, Hawaii, USA): 6 October 2024: 9 hr 55 min 10 sec (itself a record for this swim route)

- Cook Strait (South to North Island, New Zealand): 25 March 2025: 5 hr 13 min 57 sec

- Strait of Gibraltar (Spain to Morocco): 6 April 2025: 2 hr 51 min

- Tsugaru Strait (Honshu to Hokkaido, Japan): 8 July 2025: 8 hr 43 min 21 sec

- Catalina Channel (Catalina Island to California mainland, USA): 4 August 2025: 7 hr 57 min 40 sec

- North Channel (Northern Ireland to Scotland, UK): 4 September 2025: 8 hr 11 min 12 sec (itself a record for this swim route).

This bettered the previous record of 63 hours 2 minutes 9 seconds achieved by Andrew Donaldson (UK) between 7 August 2022 and 27 July 2023.