Short answer: The Gaumukh trek runs about 18 km one way from Gangotri to the snout of the Gangotri glacier, the source of the Bhagirathi. It needs a Gangotri National Park permit, capped at 150 trekkers a day. Most people take two to three days, overnighting at Bhojbasa. Spend a night or two in Harsil first to acclimatise.
Gaumukh trek at a glance
| Question | Answer |
|---|---|
| Start | Gangotri (about 3,100 m), 25 km from Harsil |
| Distance | About 18 km one way |
| Route | Gangotri - Chirbasa (9 km) - Bhojbasa (4 km) - Gaumukh (about 4-5 km) |
| Night halt | Bhojbasa |
| Duration | 2-3 days return; add a day for Tapovan |
| Permit | Gangotri National Park permit, 150 people per day |
| Season | Roughly May to October, outside the monsoon |
| Difficulty | Moderate; altitude is the main challenge |
The route
The trail leaves Gangotri along the Bhagirathi and climbs gently through forest to Chirbasa, named for its chir pines. Beyond it the trees thin out and the path crosses scree and landslide zones to Bhojbasa, named for its birch (bhoj) trees, the only night stop with buildings. From Bhojbasa it is a few kilometres over moraine to the glacier snout at Gaumukh. Fit trekkers continue across the glacier to Tapovan, under Shivling peak, with a guide.
How the permit works
Gaumukh lies inside Gangotri National Park, so every trekker needs a park permit, issued through the forest department (the DFO office in Uttarkashi, with a counter at Gangotri in season). Numbers are capped at 150 a day, first come first served, so in May and June arrive with a day in hand. Carry photo ID. Fees differ for Indian and foreign nationals - check current rates before you go.
Why acclimatise in Harsil first
Rishikesh is at about 350 m; Bhojbasa is around 3,800 m. Going straight up in a day or two is how people get altitude sickness. A night or two at Harsil (2,620 m) before Gangotri gives your body time to adjust and makes the trek far more enjoyable. Harsil also has proper rooms, heating and food to come back to.
A sample plan
- Day 1: Arrive Harsil. Rest.
- Day 2: Easy day in Harsil - Sattal or Mukhba.
- Day 3: Drive to Gangotri early, get the permit, trek to Bhojbasa.
- Day 4: Bhojbasa to Gaumukh and back down to Gangotri; drive to Harsil.
- Day 5: Rest in Harsil before the drive home.
What to carry
- Permit, ID, cash.
- Warm layers, rain shell, sturdy shoes, sun protection.
- Water and snacks - shops on the trail are few and seasonal.
- Carry all rubbish back down; plastics are restricted in the park.
Plan the drive with Delhi to Harsil by road, see where to stay for Gangotri, and book your acclimatisation nights at Harsil Village Resort.
Frequently asked questions
How long is the Gaumukh trek?
About 18 km one way from Gangotri, via Chirbasa and Bhojbasa. Most people take two to three days for the return trip.
Is a permit required for Gaumukh?
Yes. Gaumukh is inside Gangotri National Park and needs a park permit. Only 150 trekkers are allowed each day.
Where do you stay on the Gaumukh trek?
Bhojbasa is the usual night halt. Before and after the trek, Harsil or Gangotri make good bases.
When is the best time for the Gaumukh trek?
May-June and September-October. Avoid the July-August monsoon.
Is the Gaumukh trek difficult?
It is moderate. The path is not technical, but altitude is a real challenge, so acclimatise in Harsil for a night or two first.