Buses and minibuses go to Chiang Mai (Arcade terminal) and Mae Hong Son. Regular public buses take around 4 hours and charge 75-150 baht; minibuses take around 3 hours and tickets (sold by travel agencies) cost about 150-180 baht. One strategy is to get to Pai using the public bus so that you can get an idea as to how winding the road is and then you can decide if you want to splurge and get the minibus back to Chiang Mai. To feel less travel sick and save some money take the regular public bus. The scenery is lovely and the winding roads are much easier on one's stomach if you take things slowly.