A guy from Sweden rode his bicycle to Nepal, climbed Everest alone without Sherpas or bottled oxygen, then cycled back to Sweden again.
For his 1996 ascent, Göran Kropp left Stockholm on October 16, 1995, on a specially-designed bicycle with 108 kg (240 lb) of gear and food. He traveled 8,000 miles on the bicycle and arrived at Everest Base Camp in April 1996. Following a meeting of all of the Everest expeditions on the mountain at the time, it was agreed that Kropp would attempt to summit first.