India-Bhutan Land Border

Border Description

The land border between India and Bhutan runs along the eastern and northeastern regions of India (states: Sikkim, West Bengal, Assam, Arunachal Pradesh) and the southern border of Bhutan.

Length

Approximately 699 kilometers (434 miles).

Characteristics

• Largely open, with designated crossing points (e.g., Phuentsholing–Jaigaon, Gelephu–Dadgiri, Samdrup Jongkhar–Darranga).
• Defined by the 1865 Treaty of Sinchula and 1910 Treaty of Punakha, later affirmed by 1949 and 2007 treaties.
• Strong bilateral cooperation on security, trade, and hydropower.