Sichuan-Tibet Highway is the longest, 2413 kilometers (1496 miles) long, built in 1950 and opened for traffic in 1954. The roads ply the uneven terrain over 14 mountains which average 4000-5000 meters (13120-16400 feet) high, and over a dozen of famous rivers such as Lantsang River (Mekong). The climate along the road presents beautiful scenery ranging from spring to winter. However, the road condition is not good.
Qinghai-Tibet Highway starts from Golmud of Qinghai, the only road providing bus service among the five highways and the main road to travel Tibet. 1160 kilometers (720 miles) long and averaging 4000 meters (13120 feet) high, along Kunlun Mountains and vast grassland, which amaze people living in modern civilization, the bituminous road is the best road leading to Tibet.
Xinjiang-Tibet Highway starts from Yecheng in Xinjiang. It runs 1455 kilometers (902 miles), winding its way among fives mountains soaring more than 5000 meters (16400 feet) high above the sea level. A spectacular view of Mt. Kailash and Lake Manasarova overwhelm travelers while traveling along the road.
Yunnan-Tibet Highway spans 800 kilometers (492 miles) to reach Markham, a less beaten track by travelers.
Chinese-Nepalese Highway is another main road traveled often. It stretches 900 kilometers (558 miles) from Kathmandu to reach Shigatse and Lhasa.
Among the five highways, only Qinghai-Tibet Highway and Chinese-Nepalese Highway are open to foreigners at present. Inside Tibet, there are now regular buses shuttling between major towns.Among the five highways, only Qinghai-Tibet Highway and Chinese-Nepalese Highway are open to foreigners at present. Inside Tibet, there are now regular buses shuttling between major towns.