Fastest swim crossing of the North Channel (male) - LA2

The fastest swim crossing of the North Channel (male, LA2) is 15 hours 22 minutes 41 seconds, achieved by Jonty Warneken (UK) who swam from Donaghadee, County Down, Northern Ireland, to north of Portpatrick, Dumfries and Galloway, Scotland, UK, on 8 September 2023. He was piloted by Pádraig Mallon on board INFINITY and the swim has been ratified by the Irish Long Distance Swimming Association.

Warneken underwent a below-knee amputation of his left leg following a motoring accident and also has osteoarthritis in his right ankle.

Warneken is the first amputee to ever solo swim across the North Channel, which is part of the Oceans Seven challenge and considered one of the hardest waterways in the world to traverse by swimmers owing to its cold temperatures, strong currents and large number of stinging jellyfish. He was also part of the first all-disabled team to relay swim across the North Channel (Team "Bits Missing"), completed on 22 June 2022, along with four fellow leg amputees – David Burke, Mary Clewlow, Andrew Smith and Kate Sunley (all UK) – in a time of 15 hours 8 minutes 35 seconds.

Warneken also holds the record for the longest distance para ice swim by a male, covering 2.11 km (1.31 mi) under International Ice Swimming Association regulations in Lake Ellerton, North Yorkshire, UK, on 19 January 2014.