Spanning 1700 kilometers across some of the most pristine places on the planet, the Great Himalayan Trail (GHT) is truly wondrous. Present in Nepal as a network of existing treks and trails, the GHT forms one of the highest and longest walking trails in the world. Now, climber Apa Sherpa, a world record holder for scaling Mt. Everest 21 times is walking this distance across 120 days to promote the trail.