[keiferski]

Sea to Summit might count:

> He would start with a swim in India's Bay of Bengal, walk over 700 miles across the Indo-Gangetic Plain, through the Himalayan foothills and climb every single one of Everest’s 29,029 feet. By starting at sea level, Tim added hundreds of miles and close to an extra 10,000 feet of elevation to the typical Everest expedition, which usually starts from Lukla at 9,383 feet.

https://www.rei.com/blog/climb/sea-level-to-everests-summit-...

[magicalhippo]

Walking 500 miles across a plain doesn't quite feel like something I'd consider part of a climb.

But a massively impressive feat that's for sure!