After talking with Justin we agreed on going to the Mae Jo area, lot of single tracks in the area, and just a few km of road to get there.
The meeting point is at the rimping center on the road to Mae Jo at 10am. The idea is to leave around 10, so it doesn't hurt to get there around 9.50am.
For those who don't know where it is, it's on the 1001 (main road from town to MaeJo) right after a big crossing with traffic light (I think the second) on the left side. It's a big shopping mall with also a big McDonalds sign, hard to miss. If anyone has the gps coordinates he can post it.