
Essential Planning Guide
Bali Pass is the 'Grand Crossover' of the Garhwal Himalayas, a high-altitude bridge that connects the lush Har Ki Dun valley to the sacred Yamunotri valley. Reaching an elevation of 16,207 ft, this trek is not for the faint-hearted. It is a journey of extreme contrasts: starting from the ancient wooden villages of Sankri and Osla, winding through the pristine alpine lake of Ruinsara Tal, and culminating in a technical, 60-degree descent on snow and scree into the Yamunotri basin. Bali Pass is an expert-level test of endurance and technical skill, offering a rare close-up of the Swargarohini massif and the formidable Black Peak (Kalanag). For those who conquer its vertical wall, it is a definitive Himalayan achievement.
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Duration
Max Altitude
Difficulty
Best Time
Trek Distance
Stargazing
Class 1 Dark Sky
Scent Profile
Silence Level
~25 dB
Vertigo Factor
5 / 10
10-hour drive from Dehradun to Sankri
Return drive from Janki Chatti is 7 hours
Base Village
Sankri (Start) / Janki Chatti (End)
6,400 ft
Nearest Railhead
Rishikesh
Nearest Airport
Jollygrant Airport
Last ATM
Purola (Not reliable). Withdraw in Dehradun.
Mobile Signal
BSNL/Jio at Sankri. Spotty signal at Osla. Zero coverage for the remaining 5 days across the pass.
Water Sources
Abundant water in Har Ki Dun valley (Tons river). Odar (cave) camp near the pass has a reliable melt-stream. Filter mandatory.
Charging
Available at Sankri (Base). Extremely limited solar/hydro charging at Osla village (courtesy). None at high camps.
Road Condition
Road from Purola to Sankri is narrow and prone to monsoon blocks; expect delays.
Purola
8-day route reaching 16,207ft. Covers 48km of varied terrain.
→ See full itinerary with altitude profileRated moderate. Terrain and fitness requirements vary by season.
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It is non-technical but the final ridge crossing at 16,200 ft is very narrow and steep, requiring steady nerves.
It connects the Tons river valley (Har Ki Dun side) to the Yamuna river valley (Yamunotri side).
Yes, Ruinsara lake is a major and beautiful camping highlight on the first half of the trek.
Yes, absolutely. The descent on the Yamunotri side is extremely steep and icy; microspikes and trekking poles are mandatory.
No. It is a hard trek and requires prior high-altitude experience and excellent endurance.
Janki Chatti at the end of the trek or Purola back at the base.
Odari means "cave". It is a rocky shelter used as a camp before the final pass crossing.
None. You are in deep wilderness for 6-7 days until you reach Janki Chatti.
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This encyclopedia entry for Bali Pass Trek is curated from a mix of public survey records, first-hand climber accounts, and official permit logs. However, mountains are dynamic. If you have been on this route recently and noticed a change in terrain, water availability, or local regulations, we want to hear from you.
Community Vetted
Last Verified: May 2026
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