The National Highway (NH) is the primary road that intersects Bhutan and provides the primary mode of transportation from West to East and vice versa, for Bhutan’s residents and visitors. It is known for winding its way up and down mountains, over bridges, along the side of cliffs, and over tall mountain passes. The views can be breathtaking at times. The highway is currently under construction in sections, so delays can be common.
Bhutan Distance & Altitude chart with Driving Time (in Kilometers)
| From | To | Distance (Kilometers) | Time (Taken) |
| Paro (2200 m) | Thimphu | 54 Km | 1 hr + |
| Paro | Haa | 70 Km | 2.5 hrs |
| Paro | Punakha/ Wangdue | 130 Km | 4-5 hrs |
| Paro | Phuentsholing | 165 Km | 5-6 hrs |
| Thimphu (2300 m) | Punakha | 71 Km | 2.5 hrs |
| Thimphu | Wangdue | 70 Km | 2.5 hrs |
| Thimphu | Gangtey, Phobjikha | 134 Km | 5-6 hrs |
| Thimphu | Trongsa | 199 Km | 7 hrs |
| Haa (2700 m) | Thimphu (via Chuzom) | 112 Km | 4 hrs |
| Punakha (1350 m) | Wangdue | 13 Km | 45 min |
| Wangdue (1300 m) | Gangtey, Phobjikha | 65 Km | 2.5 hrs |
| Wangdue | Trongsa | 129 Km | 5 hrs |
| Wangdue | Jakar, Bumthang | 195 Km | 6-7 hrs |
| Gangtey (2900 m) | Trongsa | 120 Km | 4-5 hrs |
| Jakar, Bumthang (2650m) | Tang | 40 Km | 1.5 hrs |
| Jakar | Ura | 48 Km | 2 hrs |
| Jakar | Mongar | 198 Km | 7 hrs |
| Trongsa (2200 m) | Jakar | 68 Km | 2-3 hrs |
| Trongsa | Zhemgang | 110 Km | 4.5 hrs |
| Trongsa | Tingtibi | 105 Km | 4 hrs |
| Tingtibi (600m) | Gongphu | 45 Km | 2 hrs |
| Tingtibi | Panbang | 85 Km | 4+ hrs |
| Tingtibi | Manas (Bhutan) | 95 Km | 5 hrs |
| Tingtibi | Gelegphu | 115 Km | 4 hrs |
| Zhemgang (1900m) | Tingtibi | 16 Km | 40 Min |
| Panbang (300m) | Manas (Mathanguri) 150m | 11 Km | 40 Min |
| Gelegphu (280m) | Guwahati, Assam | 390 Km | 5-6 hrs |
| Gelegphu | Phuentsholing | 195 Km | 4 hrs |