On April 2012, he successfully led the first expedition to complete the Great Himalaya Trail, a 1,700-kilometre (1,050-mile) trek spanning the entire length of the Nepalese Himalayas. The Great Himalaya Trail is considered to be one of the world's most difficult treks. Sherpa and three companions set off in January on the Climate Smart Celebrity Trek, an expedition promoting tourism and highlighting the effects of climate change. The adventurers set out from the shadow of the world's third-highest peak, Mount Kanchenjunga, in the east and finished at Nepal's border with Tibet in the west, 20 days ahead of schedule. Along the way they traversed some of the world's most rugged landscapes, ascending beyond 6,000 metres (19,600 feet). Dawa Steven Sherpa, a member of the expedition who has climbed Everest twice, said the group found mountain communities that rely on subsistence farming were suffering the effects of climate change.