THE SHORT VERSION
Nakhon Ratchasima (Korat) to Udon Thani at a glance.
- From
- Nakhon Ratchasima (Korat) นครราชสีมา
- To
- Udon Thani อุดรธานี
- Road distance
- About 314 km
- Straight line
- 284 km
- Car time, no stops
- ~3 h 45 min buses take longer
- Return route
- Udon Thani to Nakhon Ratchasima (Korat) →
THE DETAILS THAT MAKE A DIFFERENCE
Right place. Right bus. Better start.
Leaving Nakhon Ratchasima (Korat)
Nakhon Ratchasima (Korat) is the largest city in north-east Thailand and the gateway to Isan. It has two bus terminals in the city.
- Korat Bus Terminal 1
Central. Mainly services to Bangkok. - Korat Bus Terminal 2
On Mittraphap Road. Long-distance services across Isan and the north.
Arriving in Udon Thani
Tuk-tuks and songthaews connect the terminals with the centre.
- Udon Thani Bus Terminal 1
In the centre. Long-distance buses and the international bus to Vientiane. - Udon Thani Bus Terminal 2
On the edge of town. Regional services.
Keep the essentials offline
Save your ticket, the exact meeting point and the operator's phone number before you set off. Follow the check-in time on your confirmation.
- For Vientiane, the international bus is the simplest way across the border.
KEEP GOING
From Udon Thani, the road continues.
Other ways to reach Udon Thani
More buses from Nakhon Ratchasima (Korat)
USEFUL FOR THIS TRIP
Sort the small things before you go.
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GOOD QUESTIONS
Before you take your seat.
How far is Nakhon Ratchasima (Korat) from Udon Thani by road?+
About 314 km by road (284 km in a straight line). Distance is an OpenStreetMap routing estimate, not an operator figure.
How long does the bus from Nakhon Ratchasima (Korat) to Udon Thani take?+
We don't publish timetables. As a guide, the drive takes roughly 3 h 45 min by car without stops; bus journeys are usually longer. Check the duration of your chosen departure on 12Go before booking.
Where does the bus leave from in Nakhon Ratchasima (Korat)?+
It depends on the operator. Main options in Nakhon Ratchasima (Korat) include Korat Bus Terminal 1, Korat Bus Terminal 2, and many tourist companies collect from offices or hotels. Your ticket shows the exact boarding point.
Is there a bus back from Udon Thani to Nakhon Ratchasima (Korat)?+
Yes, 12Go also lists services in the opposite direction. See our Udon Thani to Nakhon Ratchasima (Korat) guide.
Where does the bus from Nakhon Ratchasima (Korat) arrive in Udon Thani?+
It depends on the operator. In Udon Thani, services use Udon Thani Bus Terminal 1, Udon Thani Bus Terminal 2. Tuk-tuks and songthaews connect the terminals with the centre.
How do I get from the bus stop to the centre of Udon Thani?+
Tuk-tuks and songthaews connect the terminals with the centre.
What kind of bus runs from Nakhon Ratchasima (Korat) to Udon Thani?+
It varies by operator and departure. Routes in this region are served by a mix of sleeper buses, seated coaches and smaller limousine vans. Check the vehicle type, seat layout and luggage allowance for your departure on 12Go before you book.
Can I book the Nakhon Ratchasima (Korat) to Udon Thani bus online?+
Yes. 12Go lists departures on this route. You choose a date, compare operators and pay online, and the provider issues the ticket. BusConnects doesn't sell tickets itself.
Where can I go next from Udon Thani by bus?+
Direct buses from Udon Thani include Vientiane, Khon Kaen, Phitsanulok, Ubon Ratchathani, Ayutthaya and more. See all connections on our Udon Thani bus page.
FOLLOW THE INFORMATION
Clear sources. Better decisions.
Route listed in 12Go's public route index (checked 2026-10-09). Station information reviewed 2026-10-09. Distance: OpenStreetMap data via OSRM (approximate driving distance). Listings change and are not live inventory. Confirm the departure, pickup, price and conditions before paying.
12Go: Nakhon Ratchasima (Korat) to Udon Thani bus route listing ↗Wikivoyage: Nakhon Ratchasima (Get in) ↗Wikivoyage: Udon Thani (Get in) ↗How BusConnects uses sources →