Himalayan Odyssey
 

The ultimate head rush; the Himalayan Odyssey is a mountain adventure organised by Royal Enfield. Undertaken by Royal Enfield riders from around the country,

http://www.royalenfield.com/app/IN/odyssey.asp

I know of People (Both indian and foreigners) who have gone on the Royal enfield organised ride and had good things to say about it.

Though I would prefer to do this ride with some good friends, Putting this link up here just so that if inyone's interested in Riding in India he/she might find it useful.

This is an annual event and happens every year once the roads open in Kashmir, and passes through the world's highest motorable road!