Mastering Mountain Transit Planning
Designing cross-valley itineraries requires realistic calculations of driving times across high mountain passes. On high gradients, average vehicle speeds drop to 20-25 km/h.
Pass Elevations & Travel Metrics
- Rohtang Pass (3,978m / 13,050 ft): Connects Kullu Valley with Lahaul. Driving time from Manali: 2 hrs. Operates June to November (or bypass year-round via Atal Tunnel).
- Kunzum Pass (4,551m / 14,931 ft): Connects Lahaul with Spiti Valley. Open mid-June to mid-October. Steep gravel switchbacks requiring 4x4 or high-clearance vehicles.
- Jalori Pass (3,120m / 10,236 ft): Connects Shimla (Ani) with Kullu (Banjar/Aut). Open March to December. Famous for extreme steepness on both approaches.
- Sach Pass (4,420m / 14,500 ft): Connects Chamba with Pangi Valley. Open late June to mid-October. One of the world's most thrilling high-mountain routes.