The Himalaya is indeed the most sacred and divine mountain range in the world. In the last few years, it has become more and more popular among adventure lovers and trekkers who come here to explore and experience the divine beauty of Mother Nature in some of the most remote parts of the Himalayas. Their ambition leads them to many known and lesser-known treks.
Humorously, there are certain Himalayan treks that have become so famous that they are well-known even to people living on the coastal lines of India, whereas certain treks are not known to some locals either.
Borasu Pass Trek is one such lesser-known high-altitude Himalayan mountain trek lying in the Garhwal Himalayas of India. Borasu Pass Trek is a very unique trek since it divides two different states of India: Uttarakhand and Himachal Pradesh. Moreover, Borasu Pass also falls near the border of Tibet. It is believed that the Borasu Pass, also known as Barasu Pass, was used as a trade route between Har ki Dun Valley and Kinnaur Valley in older days. Can you imagine the beauty of this trek during that time when the local people may have walked on the trails about 500-1000 years ago? What a spectacular beauty this high-altitude Himalayan Pass may have offered to the traders passing through it. Isn't it? Instead of traders, these days, this trek is sought after by the trekkers looking for challenging treks.

Borasu Pass divides Uttarakhand from Himachal Pradesh and it is located near the border of Tibet. The Borasu Pass trek starts from the Tons Valley in Uttarakhand and ends at the Baspa Valley in Himachal Pradesh. This trek falls into the Govind Pashu Vihar National Park. Both Tons and Baspa Valley are named after the names of the respective rivers that flow through these valleys. Tons river flows through Tons Valley in Uttarakhand and merges with the sacred river Yamuna. Whereas the Baspa River flows through the Baspa Valley and merges with the Sutlej river.
By embarking on the Borasu Pass trek, you will traverse through remote Himalayan villages like Osla, where you will get a chance to observe the unique ancient mountain architecture, culture, and lifestyle of the villagers who live in these remote Himalayan villages. With every passing day, the Borasu Pass Trek will reveal astonishing beauty before you. From the village trails, this trek will take you to the beautiful vast alpine meadows, and lush green forests of Pine, Bhojpatra, and Rhododendrons; You will hike through ridges, and witness the spectacular Marinda Tal, which is a glacial lake. From there you will trek to some challenging terrains where you will encounter steep climbs and descends through moraines, glaciers, and snow-capped mountains. Starting from a small village of Uttarakhand, this trek will take you to the Chitkul village of Himachal Pradesh.
During the Borasu Pass trek, you will be able to see some spectacular high mountain peaks of Uttarakhand Garhwal Himalayas like Swargarohini, Bandarpoonch, Kala Nag (AKA Black Peak), Bonga Peak, Bali Pass, and Dhumdhar Kandi Pass. From the Barasu Pass, if you look back, you will see the astonishingly beautiful Har ki Dun Valley.
The high altitude of the Barasu Pass and the long walking distances make this trek difficult and hence the Borasu Pass trek is suitable only for experienced trekkers and mountaineers.