For travellers planning a journey from Bangkok to Khao Yai, the M6 motorway free trial, which began on 21 August, offers a more convenient weekend escape. During the trial period, the Bang Pa-in to Pak Chong section will operate free of charge on weekends. The direct motorway connection is expected to cut travel time by up to around one hour compared with conventional roads, making the journey more straightforward and hassle-free.
How the M6 Changes the Bangkok to Khao Yai Weekend
Driving from Bangkok to Khao Yai via the M6 Motorway
The newly opened Bang Pa-in to Pak Chong section covers approximately 110 kilometres and connects with the Pak Chong to Nakhon Ratchasima stretch which is already operating free of charge. For drivers making the Bangkok to Khao Yai journey, this creates a more continuous motorway connection towards Pak Chong and the Khao Yai area. More importantly, the Friday start of the trial makes a two-night weekend easier to plan, giving travellers greater flexibility to leave Bangkok on Friday and return on Sunday.
With greater flexibility on the road, a Bangkok to Khao Yai weekend can begin at a gentler pace. Arrive on Friday, settle into your resort, and allow more of the weekend for lakeside walks, railway-inspired design, dining and time surrounded by nature, rather than letting the journey define the pace of the trip.
Before setting off, you can check our guide alongside the latest Department of Highways guidance, as motorway access and temporary traffic arrangements may change.
Bangkok to Khao Yai M6 Weekend: Hours, Rules and Access
Before using the M6 for a Bangkok to Khao Yai weekend, it is worth knowing the current trial conditions and a few practical limitations that may affect the drive. The key details below cover what drivers need to prepare for before entering the motorway.
- Distance: ~110 km from Bang Pa-in to Pak Chong
- Operating hours: Friday noon to Sunday midnight
- Toll: Free during the trial period (continue through the New Year 2027 holiday period)
- Vehicles: Four-wheel vehicles only
- Speed limit: Maximum 80 km/h
- Rest stop: The M6 has rest areas at Wang Noi, Nong Khae, Thap Kwang, Lam Takhong and Kham Thale So. During the current trial, travellers can already make use of Thap Kwang at around Km 65 in both directions, with toilets and beverages available.
- Fuel and EV charging: Petrol stations and EV charging points are not yet available, so it is best to refuel or charge before joining the motorway.
The Department of Highways plans to expand the M6 towards free, 24-hour operation seven days a week in the future. Until then, the current Bangkok to Khao Yai service remains subject to the weekend trial schedule.
Driving from Bangkok to Khao Yai via the M6
M6 Bang Pa-in to Nakhon Ratchasima Motorway Route Map (Source: M6 Motorway)
Where to Join the M6 from Bangkok
For most drivers travelling from Bangkok to Khao Yai, the main motorway access point is Bang Pa-in. It can be reached via Kanchanaphisek Road from both the Eastern and Western Ring Roads, with another access option from Phahonyothin Road near Mahachulalongkornrajavidyalaya University.
Once on the M6, continue east towards Pak Chong. Under the current trial arrangement, the usable entry and exit points on this section include Bang Pa-in, Hin Kong, Kaeng Khoi, Muak Lek and Pak Chong.
Which Exit to Use for Khao Yai
Pak Chong is the key exit for the Bangkok to Khao Yai journey. After leaving the motorway, continue towards Thanarat Road, which leads south towards Khao Yai National Park and the surrounding Khao Yai area.
Pak Chong Exit on the M6 Towards Khao Yai
From this point, the motorway gradually gives way to greener surroundings. As Khao Yai comes into view, the landscape becomes part of the journey, inviting travellers to explore its forests, wildlife and natural surroundings.
The Kilometre 65 Closure to Know About
There is one important temporary closure to keep in mind. The entrance and exit at Kilometre 65 on Mittraphap Road, close to the Nakhonchaiburin Stray Animal Shelter, is scheduled to close from 12:00 noon on 21 August 2026. Drivers should use the official M6 interchanges instead and check the latest traffic guidance before departure.
Returning After a Bangkok to Khao Yai Weekend
After a Bangkok to Khao Yai weekend, the return journey is not simply the outbound route in reverse. At the time of publication, construction on the Bangkok-bound carriageway between Pak Chong and Muak Lek remains unfinished, which changes where drivers can rejoin the M6 towards Bangkok.
When leaving Khao Yai, follow Thanarat Road towards Pak Chong, then join Mittraphap Road and continue towards Muak Lek. From there, enter the M6 at the Muak Lek interchange and continue west towards Bangkok. Under the current arrangement, Pak Chong should not be used as a Bangkok-bound motorway entry point.
This temporary difference is worth keeping in mind when planning a Bangkok to Khao Yai weekend. While the outbound journey can remain on the M6 as far as Pak Chong, the return requires an additional stretch along existing roads before motorway travel resumes at Muak Lek.
Allow extra time for this section when planning your Sunday departure, particularly if you intend to rejoin the M6 within the current weekend operating hours. As construction progresses, check the latest Department of Highways guidance and live navigation before setting off, as the return arrangement may change.
Making the Most of Your Khao Yai Weekend
Friday: Ease Into the Weekend
A well-paced Bangkok to Khao Yai weekend can begin after the motorway opens at noon on Friday. Once at the resort, settle into one of the heritage railcar rooms or villas and let the first evening unfold at an unhurried pace. Dining at InterContinental Khao Yai offers plenty of choice, from refined European cuisine aboard a heritage railcar at Poirot to relaxed Thai favourites at Somying’s Kitchen. It is an easy way to settle into the weekend before a fuller day of discovery begins.
Heritage Railcar Pool Villa at
InterContinental Khao Yai Resort
Breakfast at Somying’s Kitchen
Saturday: Slow Down and Explore
Saturday can belong more fully to the landscape. Guests can begin in the Botanical Garden, where the plants, trees and quieter details of the grounds come into focus, then continue the sense of discovery through Signature Tours and other nature-led experiences. As the day slows, Spa & Wellness offers a gentler change of pace, with treatments set within the resort’s distinctive railway-inspired surroundings. Together, these moments give a Bangkok to Khao Yai trip its rhythm: time beneath the trees, a walk beside the lake, the character of restored railcars, and an afternoon with nowhere urgent to be.
Black Swan at Swan Lake
Massage at Back on Track Spa
Sunday: Leave Time for the Journey Home
On Sunday, keep breakfast unhurried, while allowing a little extra time for the return journey via Muak Lek. The easier access by road is not about fitting more into the weekend, but about creating more space to enjoy the stay at your own pace before making the journey back to Bangkok.
When planning your next Bangkok to Khao Yai weekend, explore the resort’s current Offers, review room availability and booking conditions, and book directly through the official InterContinental Khao Yai or IHG websites. The earlier The Scroll Stops Here campaign has ended, so the live Offers page is the best place to check the latest available stay opportunities.