He also swam through the Gulf of Corryvreckan (Scotland) one of the world's largest whirlpools and crossed frozen fjords in the arctic circle where the water temperature was just above freezing (1°C/33.8°F) and documented his training, nutrition, theories and strategies and published them in his books titled The World's Fittest Book (2018), The Art of Resilience (2020), and Blueprint: Build a Bulletproof Body for Extreme Adventure in 365 Days (2021).

[10] Although playing many sports as a child (football, rugby, trail running and tennis), he specialised in swimming and water polo and represented his country internationally at junior level whilst studying at King's Grammar School in Grantham, England.

A year into his scholarship, Edgley then retired from international competition and decided to transition into ultra-distance sea swimming instead, which the university supported through the National Centre for Sport and Exercise Medicine.

[12] In 2019, he received an honorary doctorate from Bishop Grosseteste University (BGU) in Lincoln,[13] for his research into mental and physical resilience and continues to coach and lecture around the world in the science and psychology of adventure.

Edgley never celebrated the achievement, however, and instead joked it was only a "warm up" because he still had 1,442 miles to swim (and 127 days at sea) before he completed his much larger mission and arrived back in Margate, Kent.

Which is why, in preparation for the extreme endurance event and to counteract the cold effect of continual immersion in water, he gained 10 kilos of weight by consuming 10,000 calories a day.

The route and precise distance are unknown, but Ross remains the only person to survive swimming in a wetsuit in the cold waters of Loch Ness for more than 52 hours.

Dubbed the 'Cerberus heat wave' after the mythical monster that guards the gates of hell[25] the World Meteorological Organisation later confirmed this was the hottest month ever recorded on earth.

He later joked during a talk with GQ Magazine that although it had, "Quickly (and unintentionally) turned into the world's hottest lake swim... it wasn't all bad, for the final 10km I was solely eating ice cream to try and bring my core temperature down... which was awesome.

In addition to the threat of hypothermia, Edgley had to navigate white water rapids, bears and wolves and stressed he could not have done it without his incredible team: Christopher J Morgan, Ger Kennedy and Thomas Walter Kofler, Larry Bonnett, Brian Earl, Liam Parfitt, Stan Fordyce, Scott Edgley, Hester Sabery, Dr Tom Hall,  Stephen O’Brien, Eric Bonnett, John Robertson, Raymond Kmyta, Shannon Kmyta and Sherrie Earl.

[36] Despite failing to complete the swim due to weather conditions (only 5 km from shore), the series was, "a summer hit for Channel 4, averaging around 2 million viewers across its four-episode run" raising thousands for charity.

In one episode, he coached Hemsworth to complete a 500-metre ice swim across a Nordic Fjord (high above the arctic circle) where the water temperature was recorded at 1 °C (33.8 °F), all on only 7 days training.