Auden Col Trek Altitude: 5450 m / 17876 feet Grade: Challenging Tough Duration: 18 Days Season: Mid May to Early October The Auden Col is one of the most difficult treks in the Garhwal region, is a mountain pass that connects ridge of Gangotri and Jogin between Rudugaira glacier and Khatling glacier. Audens Col trek joins two valleys, Rudragaira valley and Bhilangana valley. Audens Col binds two glaciers on the opposite sides. One is Khatling glacier and the other one looks like the glacier belonging to Jogin I. Auden's Col is the most frequented route to reach two pilgrim centers Kedarnath and Gangotri through Maiali Pass and Khatling Glacier. One will cross several high altitudes lake like Masar Tal, Pari Tal, Vasuki Tal etc while doing this trek. Haridwar - Rishikesh - Uttarkashi- Gangotri-Nala Camp- Rudra Gaira Base Camp - B C Gangotri Group- Auden Col BC - Khatling Glacier- Waterfall Camp- Chowki - Masar Tal - Vasuki Tal - Kedarnath Gaurikund (Rudraprayag)- Haridwar Rishikesh - Uttarkashi (170 km) Uttarkashi - Gangotri (95 km). Gangotri - Nala Camp (8 km) Nala Camp - Rudra Gaira Base Camp (7 km) Rudugaira BC - B C Gangotri Group (6 km) B C Gangotri Group - Auden Col BC (6 km) Auden Col B C - Khatling Glacier (12 km) Khatling Glacier - Waterfall Camp/Zero Point (12 km) Waterfall Camp/Zero Point - Chowki (8 km) Chowki - Masar Tal (8 km) Masar Tal - Vasuki Tal (12 km) Vasuki Tal - Kedarnath (5 km) Kedarnath - Gaurikund (14 km)