THE SHORT VERSION
Rayong to Udon Thani at a glance.
- From
- Rayong ระยอง
- To
- Udon Thani อุดรธานี
- Road distance
- About 645 km
- Straight line
- 551 km
- Car time, no stops
- ~7 h 45 min buses take longer
- Return route
- Not listed as direct
THE DETAILS THAT MAKE A DIFFERENCE
Right place. Right bus. Better start.
Leaving Rayong
Boarding points depend on the operator: some use the local bus station, others collect from their office or your hotel. Your ticket shows the exact place and check-in time.
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 Rayong
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 Rayong from Udon Thani by road?+
About 645 km by road (551 km in a straight line). Distance is an OpenStreetMap routing estimate, not an operator figure.
How long does the bus from Rayong to Udon Thani take?+
We don't publish timetables. As a guide, the drive takes roughly 7 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 Rayong?+
It depends on the operator: some use the local bus station, others collect from offices or hotels. Your ticket shows the exact boarding point.
Is there a bus back from Udon Thani to Rayong?+
12Go's public route list doesn't include Udon Thani to Rayong as a direct route. You may need to change in another town.
Where does the bus from Rayong 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 Rayong 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 Rayong 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, Nakhon Ratchasima (Korat), Phitsanulok, Ubon Ratchathani 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: Rayong to Udon Thani bus route listing ↗Wikivoyage: Udon Thani (Get in) ↗How BusConnects uses sources →