Experience thrilling treks in India.

1. Stok Kangri
Where: Ladakh in Jammu and Kashmir

2. Rupin Pass
Where: Himachal Pradesh

3. Chadar Trek
Where: Ladakh in Jammu and Kashmir

4. Lamkhaga Pass
Where: It starts from Harsil in Uttarkhand, and ends at Chitkul in Himachal Pradesh

5. Roopkund
Where: Uttarakhand

6. Pin Parvati Pass
Where: Himachal Pradesh. The trek begins from Khir Ganga, crosses over to Spiti and ends at Manikaran, a religious place for Sikhs.

7. Mayali Pass Trek
Where: Uttarkashi in Uttarakhand

8. Snow Leopard Expedition
Where: Hemis National Park, Ladakh in Jammu and Kashmir

9. Kugti Pass
Where: Himachal Pradesh. From Bharmour, in Chamba district of Himachal Pradesh, head (by vehicle) to Dharol, the starting point of the trek.

Source: http://www.dnaindia.com/lifestyle/report-toughest-treks-in-india-1922189