Mountain biking is a fantastic way to explore Nepal. The allow you to travel independently and stop where ever you want. You do not have to tortuous buses. You can explore secluded places and reach places that can not be visited any other way.
Nepal has many trails to ride on. You can make a challenging climb thousands of metres to reach a viewpoint with fantastic views. Then you make an exhilarating descent. It is an interesting trip ride to Royal Chitwan National Park.