Plan your own golfing trip around Khanom.
Play golf in Nakhon Si Thammarat or Surat Thani (both approx 1 hour driving from Khanom).
Or a golf day trip to Koh Samui by Ferry (90 min).
Traveling to or from Khanom, through Thailand's South? Then you might want to plan a stopover and play golf near Khao Sok National Park.
http://www.golfdd.com/course/185
http://www.golfdd.com/course/176
http://www.golfdd.com/course/96
http://www.golfdd.com/course/153
http://www.golfdd.com/course/188
http://asiatours.net/golf/thailand/courses/sur_rajjaprabha.html