Manali to Leh Highway: NH3, Himachal Pradesh and Ladakh, India

Distance: 427 km (265 miles), Manali to Leh via the Atal Tunnel. Three days. Altitude: 5,328 m (17,480 ft) at Tanglang La Hairpins: 21 (Gata Loops) Key passes: Baralacha La (4,890 m), Nakee La (4,739 m), Lachulung La (5,059 m), Tanglang La (5,328 m) Best for: high-altitude adventure, Himalayan touring, adventure bikes Best time: mid-June to September Technicality: High, but from altitude and surface rather than corners. Golden section: Sarchu to the More Plains, around 80 km (50 miles)