Fastest circumnavigation swim around Jersey (LA2) (male)

The fastest circumnavigation swim around Jersey (LA2) in the Channel Islands by a male swimmer is 11 hours 33 minutes 35 seconds, achieved by Jonty Warneken (UK) on 5 August 2024. He was piloted by Carlton Moody aboard Sappho and the swim was observed and ratified by the Jersey Long Distance Swimming Club.

The swim started and ended at the Elizabeth Castle breakwater in St Helier. He set off at 6.09 a.m. and arrived back at 5.42 p.m. In total, he covered a distance of 56.2 km (34.9 mi).

Warneken underwent a below-knee amputation of his left leg following a motoring accident and also has osteoarthritis in his right ankle. This trailblazing swim around Jersey preceded by a few months the 30th anniversary since losing his leg.

This isn't his first adaptive swimming record. On 8 September 2023, he traversed the 35-km (21.5-mi) North Channel between Ireland and Scotland, UK, in 15 hours 22 minutes 41 seconds (he is the first amputee to complete that route solo). He was also part of the first all-disabled team to relay swim across the North Channel (Team "Bits Missing"), 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 – i.e., in water sub-5°C (41°F) wearing only a swimming costume, cap and goggles – in Lake Ellerton, North Yorkshire, UK, on 19 January 2014.