The centre for mountain biking adventure is Pai district, where several bike shops rent out bikes and gear to tourists. Bike tours explore nearby and remote hilltribe villages, waterfalls and hot springs. The best time is November-May. Experienced guides are ready to lead biking parties through breathtaking back-country trails for up to a week. There are natural cycle paths through the forest, first trod by animals then beaten by man. They range from as narrow as a single persons stride or as wide as an elephant or ox cart.