May through October in Ladakh are the best months for a Leh-Ladakh Bike Trip. The highways leading to Srinagar reopen in the middle of May, while the road to Manali doesn’t open until much later in the month. You can only take this road journey in the spring and the summer.
- https://www.motorcycletoursindia.com/motorcycle-trip-to-ladakh.html
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May through October in Ladakh are the best months for a Leh-Ladakh Bike Trip. The highways leading to Srinagar reopen in the middle of May, while the road to Manali doesn't open until much later in the month. You can only take this road journey in the spring and the summer.
- India