The Bali Pass Trek, located in the western range of the Garhwal Himalayas, is also known as India's most challenging crossover pass. It takes 7 to 9 days to complete this trek from Sankri to Janki Chatti, which includes intense hiking through dense forest, glaciers, and tight routes, as well as crossing sharp rivers. The best time to complete the Bali Pass trek is between May and June, and September and October.