"He walked through the Darién Gap between Panama and Colombia... Later, he reached the Bering Strait between Alaska and Russia — the midway point of his walk...."

"In the winter, he said, the strait does not entirely freeze over. 'It is this massive body of crushed ice and seawater…you’re literally climbing over the ice to make any short distance,' he said. He met a fellow adventurer in Alaska who traversed the strait with him. 'No one believed we were going to make it,' Bushby said. 'As it turned out, we managed to nail it on the first go, which no one expected, least of all us.' Once Bushby arrived in Russia, he hit another hurdle: he was detained for entering the country at an incorrect border. He spent 57 days in detention, he said, and faced a trial, until authorities agreed to let him continue his walk. 'It was just a whole series of miracles,' Bushby said...."

From "He set out to walk around the world. After 27 years, his quest is nearly over. Karl Bushby is expected to finish his globe-walking expedition by September 2026" (WaPo)(gift link, so you can see the photos, including Bushby immersed in Bering Strait ice).