I bought a magazine named Cycling Malaysia and i discovered there are alot of cycling events happening in Malaysia, especially jamboree. Just by paying about RM60-RM90 per event, there are good organizer, with Marshal, ambulance, good trail, food and drinks etc...
i have join their face book http://www.facebook.com/cyclingmalaysia, they keep you informed in latest coming up event, picture taken from events, latest product info, and etc...
You can find the nearest bicycle shop directory listed in their magazine, check it out...