Thailand Guide
The northeast: Isaan
Khao Yai tour operators
1 Green Leaf Guest House and Tour At kilometre-stone 7.5 on the road that runs from Pak Chong into the park 
089 424 8809 www.greenleaftour.com At this family-run outfit treks are mostly led by owner Nine, who gets good reviews, particularly as a bird-spotter. Accommodation is available at the family guest house.
2 Khao Yai Garden Lodge At kilometre-stone 7 on the road that runs from Pak Chong into the park 044 365178 www.khaoyai-garden-lodge.com Large, efficient and long established operator that runs a variety of trekking programmes, including half-day visits (B500), one-day outings (B1100 plus B400), and tailor-made treks.
3 Spice Roads Bangkok 02 712 5305 www.spiceroads
.com/thailand/khao_yai Upmarket bicycle tours of Khao Yai and its wineries, departing from Bangkok; 2 days, 1 night cost B7750 per person all-inclusive.
4 Wildlife Safari About 2km north of Pak Chong train station at 39 Thanon Pak Chong Subsanun, Nong Kaja, Pak Chong 089 628 8224wildlifekhaoyai@yahoo.co.uk Emphasizes plant-spotting and animal observation rather than hearty hikes. Their accommodation is in comfortable rooms in the garden of the family home (fan Price: B400, air-con Price: B600). Call to arrange free transport from Pak Chong.