Two other races this weekend. The Queen's Cup bicycle race for road bikes on Sat. Ceremonial start is at the clock tower at 0900. Course follows road out of town towards Pala-U waterfalll. The King's Cup for mountain bikes on Sun starts at the Bor Fai shooting range.
Minimal details from: http://bicyclethailand.com/events/, less from google translated sites.
Queen's Cup and Downhill Info

Kings Cup Info
