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Koh Rang Islands, Koh Chang: Snorkeling Day Trip Guide

Koh Rang Islands, Koh Chang: Snorkeling Day Trip Guide

The quick version

What Koh Rang is, which islands in the group are worth a stop, how long the boat trip takes, and what to check before booking from Koh Chang.

6 min readBy Koh Reefs Editorial
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Last updated November 2026: koh rang is the largest island of the Koh Rang group in Mu Koh Chang National Park, about one hour by speedboat south of Koh Chang. Most visitors see it on a snorkeling or diving day trip, not as a place to stay. Use our snorkeling guide for Koh Chang for the wider picture.

ID 1045 Klong Kloi Beach  Mu Ko Chang National Park  อช.หมู่เกาะช้าง YMD 20200212 120252 — 1
Photo: MintJazzMania, CC BY-SA 4.0, via Wikimedia Commons.

Featured image: Krzysztof Golik, CC BY-SA 4.0, via Wikimedia Commons.

What Koh Rang Is and Who It Suits

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Koh Rang is the namesake island of the Koh Rang group, inside Mu Koh Chang National Park. Local island guides place the group about one hour by speedboat south of Koh Chang. Snorkelers and divers go for the reef stops and a beach break between swims. Trips run as day tours, so expect a full day on the water. Koh Rang is not Koh Rong, the Cambodian island with a near-identical name. Make sure your booking names Mu Koh Chang National Park.

How to Get to Koh Rang from Koh Chang

ID 1045 Salakpetch Mangrove Forest  Mu Ko Chang National Park  อช.หมู่เกาะช้าง YMD 20200213 172218 — 3
Photo: MintJazzMania, CC BY-SA 4.0, via Wikimedia Commons.

Boats run south from Koh Chang, and the speedboat ride takes about one hour each way. Budget a full day: one hour out, several stops, and one hour back. You can join a shared tour or charter a private boat. Tours handle the route and the stop order. A charter lets you set the stop list, which matters because some boats skip beaches. Ask the operator for the departure pier, the pickup arrangements, and the exact islands on the route.

  • Shared tour: fixed itinerary, fewer decisions, set departure time.
  • Private charter: you choose stops and pace, but you arrange everything.
  • Either way: get the island list in writing before you pay.
ID 1045 White Sand Beach  Mu Ko Chang National Park  อช.หมู่เกาะช้าง YMD 20200212 183933 — 4
Photo: MintJazzMania, CC BY-SA 4.0, via Wikimedia Commons.

Koh Rang and Its Neighboring Islands: Which Stops Are Worth It

Snorkel tours here usually string several islands together. Koh Thong Lang is the eastern-most island of the group and one of the most popular snorkeling spots. Island guides call it plain to look at but the best for snorkelers. Koh Kra has a white sand beach on its south coast. In high season most tour boats moor off the sheltered north coast, so many visitors never reach that beach. Koh Thian (1) and Koh Thian (2) are easy to mix up. Koh Thian (2) and Koh Kra swap names between National Park and Thai Navy maps. Confirm your stops with the operator, not by map name. Two more aliases help: Koh Laun is also called Koh Yak Lek, and Koh Tun is also called Koh Rang Lek.

Koh Rang, Thailand — 5
Photo: Vyacheslav Argenberg, CC BY 4.0, via Wikimedia Commons.
IslandRoleBest forAccess noteStatus
Koh RangNamesake and largest island of the groupSnorkeling and diving day tripsAbout one hour by speedboat from Koh ChangVerify landing rules
Koh Thong LangSnorkel stopSnorkelersEastern-most island of the groupDescribed as best for snorkelers
Koh KraBeach stopWhite sand beach on the south coastBoats often moor on the sheltered north coast in high seasonAsk if the south beach is on the route
Koh Thian (2)Snorkel stop on many tripsSnorkelingName swapped with Koh Kra on some mapsVerify by operator's list
Koh Thian (1)Pass-byNot a destination on its ownNot the same island as Koh Thian (2)Verify
Koh Yak, Koh Laun, Koh Tun, Koh Klang, Koh Mapring groupPass-by or optional stopsScenery from the boatKoh Laun = Koh Yak Lek; Koh Tun = Koh Rang LekVerify with operator

Snorkeling vs Diving Around Koh Rang

Salak Khok Fishing Village bay — 6
Photo: Tang2bar, CC BY-SA 4.0, via Wikimedia Commons.

Snorkeling suits a relaxed day with a beach stop and little preparation. Koh Thong Lang is the group's best-known snorkel spot. Certified divers have more choice across the Koh Chang area. Start with our overview of diving around Koh Chang. Named sites are listed in our guide to dive sites near Koh Chang. Two examples elsewhere in the area are the Hin Luk Bat dive site and a wreck dive off Koh Chang. Neither is at Koh Rang. New divers can compare PADI course levels before choosing a trip.

Costs, Park Fees, and What a Tour Usually Includes

Park fees for Koh Rang are set by the national park authority and change over time. Check the Department of National Parks and Mu Koh Chang National Park pages for the current amount.

  • Is the park fee included in the tour price?
  • Are lunch and drinking water included?
  • Is snorkel gear included, and in what sizes?
  • Is pickup from your Koh Chang hotel offered?
  • Which islands will the boat stop at, and for how long?
Fisherman off the coast of Ko Chang — 8
Photo: Brandon Ray Minieri, CC BY-SA 4.0, via Wikimedia Commons.

Best Season and Sea Conditions

Sea conditions decide whether boats run, so read our best diving season guide before you pick a date. In high season, remember the north-coast mooring pattern at Koh Kra and ask the operator about park closure periods.

Koh Rang, Thailand — 9
Photo: Vyacheslav Argenberg, CC BY 4.0, via Wikimedia Commons.

Planning Checklist and Mistakes to Avoid

Most problems come from vague bookings. Name the islands you want and ask what the boat does if the sea is rough. Expect basic facilities, since stops are park islands rather than resorts.

Koh Rang, Thailand — 10
Photo: Vyacheslav Argenberg, CC BY 4.0, via Wikimedia Commons.
  • Booking a Koh Rang tour without checking which islands it stops at.
  • Assuming every stop has a beach to land on.
  • Trusting map names when the Koh Thian and Koh Kra labels differ.
  • Relying on old online info for fees or rules.
  • Mixing up Koh Rang with Koh Rong in Cambodia.

Other Islands Nearby if You Want a Shorter Trip

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Closer or different options exist. Try snorkeling around Koh Mak for a lighter day. Another choice is snorkeling at Koh Wai. Further east, read about snorkeling at Koh Kood. Divers can look at diving at Koh Kood.

Frequently Asked Questions

Does Koh Chang have good snorkeling?

Yes, Koh Chang works as a base for snorkeling day trips, and the Koh Rang group is one of the main outer-island options. Koh Thong Lang is among the most popular snorkeling spots there. Our snorkeling guide for Koh Chang compares more areas.

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