Image 1 of 1
Ueli Steck using Lobuche Peak, 6145 meters, for acclimating in the Khumbu Valley during his climbing expedition to Nuptse. Ueli ran to the summit of Lobuche in 1:49, in running shoes. Most climbing parties take two days to gain the summit. Here, Ueli is descending quickly down the last section of rocky ridgeline before reaching Dzonghla, Nepal.