Kayaking (800B) and tubing (500B; rainy season) are popular activities. We strongly suggest avoiding the elephant tour.
The road leading 1.8km northeast from Rte 401 to park headquarters is lined with guesthouses and travel agents offering park tours and guide services. We recommend a two-day, one-night canoeing and hiking trip (2500B; per person) to Chiaw Lan, where you sleep on the lake in floating huts. Book through the park headquarters or any tour agency: the price is the same everywhere.
Khao Sok hiking is excellent. Most guesthouses and agencies arrange hiking tours (full day 1200B to 2000B); just ensure you find a certified guide (they wear official badges). The park headquarters can also line you up with a reliable guide (1200B per day).
The park headquarters hands out basic hiking maps. You can hike independently from the headquarters to the waterfall at Wing Hin (2.8km); hikes to the waterfalls at Bang Hua Rad (3km), the 11-tiered waterfall at Sip-Et Chan (4km). Than Sawan (6km), the most impressive and least-visited waterfall, and Than Kloy (7km) require a guide.