It's not a full circumnavigation, he started at the south tip of South America, there was no Atlantic crossing.

It's also not a continuous walk/swim, he's been home many times over the years, flying back to resume the journey where he left off.

He did actually walk across the frozen Bering Strait. First attempt was 2005, but he failed. Second attempt in 2006 succeeded

The pair had to take a roundabout 150-mile route to cross the 58-mile wide strait from Alaska to Siberia, crossing sheets of ice which were drifting with the current.

Andrew Cooper, of Goliath Earth Trek UK, said: "The last 14 days have been the equivalent of running a marathon every day, so Karl will take a few days to get some energy back before he sets off again."

And from Wikipedia

Between 17 and 31 March 2006,^^ Bushby and French adventurer Dimitri Kieffer successfully crossed the Bering Strait on foot, having to take a roundabout 14-day route across a frozen 150-mile (240 km) section to cross the 58-mile (93 km) wide strait from Alaska to Siberia.^^ They were detained by Russian border troop officers while they were crossing the Russian border near the Chukotkan village of Uelen, for not entering Russia at a correct port of entry. They were threatened with being banned from Russia, which would stop the journey. It was announced on 5 May 2006 that the Russian appeal court had upheld Bushby's application and his walk would continue

He didn't. He went from South America to North America to Russia.

Exactly. 28 years - your working and priductive years - of not working, bu enjoying a walk every day? Sign me up.

Only for the rich.