🔄 Updated 21 Jun 2026
Nakhon Nayok sits right next to Pathum Thani to the east, separated by Ongkharak district. From Rangsit to Nakhon Nayok town is about 80–90 kilometres along Route 305 (which runs beside the Rangsit–Nakhon Nayok canal), a long straight shot through rice fields with almost no junctions to get lost at. Figure on roughly an hour and a half if you leave early to dodge traffic. What makes this area special is that several waterfalls fall inside Khao Yai National Park on the Nakhon Nayok side, yet they are far easier to reach than from the Pak Chong side.
We've planned this as 2 days and 1 night because if you want to actually enjoy the waterfalls, stop at the dam, and still linger at a cafe without rushing, one night over makes it far more relaxed. That said, if you'd rather do it as a day trip, you can: just pick Nang Rong Waterfall and the dam, then head back in the late afternoon.
Day 1 — Drive from Pathum Thani, hit two waterfalls
Pathum Thani → Nang Rong Waterfall → Sarika Waterfall
What to know about the waterfalls
Waterfalls in Nakhon Nayok run strongest and look their best in the late rainy season (August–November). In the dry months (March–May) some have so little water you can't swim, though Sarika and Nang Rong hold water almost all year. Before you go, check the Sarika district page or a waterfall page to see whether the water has come in yet.
Book the activities in your Pathum Thani trip ahead
Booking online ahead on Klook or GetYourGuide is usually cheaper than the gate and skips the queue. Pick only the experiences you actually want — prices and availability are shown live on each site.
Day 2 — Khun Dan Dam, then loop back via rice-field cafes
Khun Dan Prakan Chon Dam → Ongkharak cafes → Pathum Thani
The main stops on this trip
Nang Rong Waterfall
A mid-sized waterfall that flows year-round with a gentle current, plenty of pools to get into, and a bridge to cross for photos. Great for families and anyone who wants to swim without a long hike in.
Sarika Waterfall
A multi-tier waterfall dropping from a high cliff and Nakhon Nayok's best-known one, with pools to get into at intervals. You can climb to the upper tiers, though the rocky path is fairly slippery.
Khun Dan Prakan Chon Dam
The longest roller-compacted concrete dam in Thailand, with a crest over two kilometres long. Head up to walk it and take in the reservoir against the hills, with a tram, boat trips, and a coffee shop on the dam.
Wang Takhrai / rafting zone
A streamside nature park and a put-in for inflatable-raft rapids in the rainy season, good for active travellers who want a bit of a thrill. If you have time to spare on the first day, you can tack it on.
Ongkharak rice-field cafes
On the way back to Pathum Thani you pass through Ongkharak, scattered with cafes overlooking rice paddies. The green setting makes it a nice place to rest before the final leg of the drive.
Getting there and what to pack
- Main route — From Rangsit, take Route 305 (Rangsit–Nakhon Nayok) straight through Ongkharak to Nakhon Nayok town, about 80–90 km and roughly 1.5 hours.
- Driving yourself is easiest — The waterfalls and dam sit outside town and public transport barely reaches them. With no car of your own, rent one or charter a van.
- Pack swimwear and water shoes — The waterfall rocks are slippery, so closed-heel sandals help a lot, and a waterproof pouch for your phone is worth it.
- Carry cash — Waterfall entry, the tram, and many roadside spots take cash more readily than transfers.
- Leave early — You'll dodge the mid-morning traffic on Route 305 and swim before the sun gets harsh.
You can do it as a day trip too
If you'd rather not stay over, take the short version: leave Pathum Thani early, swim at Nang Rong Waterfall mid-morning, have lunch by the foothills, head up to Khun Dan Dam in the afternoon, then stop at an Ongkharak cafe in the evening before driving home. It all fits in one day without feeling too rushed.
Check out where to stay and what to see on the Pathum Thani side before you set off
See the Pathum Thani travel guide →