Khao Lak to Koh Yao Drive: Best Stops & Route Guide

The route from Khao Lak to Koh Yao starts with a 60-kilometer drive south on Highway 4 (Phetkasem Road) to the Tha Dan pier in Phang Nga town, followed by a 30-minute car ferry to Koh Yao Yai. This journey crosses a landscape shaped by the 2004 tsunami, which reshaped the coastline and left behind the lush mangroves and limestone karsts that now define the region.

Driving time on the mainland is roughly 1.5 hours, but the total trip with ferry and waiting takes 3 to 4 hours one way. The road is well-paved and flat, making it an easy drive for most vehicles, though the ferry schedule can add variability to your day.

The Phang Nga Bay area is part of the Ao Phang Nga National Park, a protected region known for its limestone karsts and emerald waters. As you drive south, you’ll pass through rubber and palm plantations that give way to mangrove forests near the coast. The local economy thrives on fishing and rubber tapping, and you'll see roadside stalls selling fresh seafood and tropical fruits like rambutan and mangosteen.

For a unique stop, pull over at the Sarasin Bridge viewpoint, which offers a panorama of the bay and the distant islands. Another hidden gem is the Wat Suwan Kuha (Cave Temple) in Phang Nga town, a cave shrine filled with golden Buddha images, just a short detour off Highway 4. The region’s cuisine is heavily influenced by southern Thai flavors, with many small eateries serving halal food due to the significant Muslim population on Koh Yao.

If you're looking for more detours and scenic spots, learn how to find the best stops and hidden gems between cities.

Highway 4 is the main artery, with numerous fuel stations along the way, including PTT and Shell, spaced every 10–15 kilometers. Prices are consistent with national averages, so refueling before or after the drive rarely makes a significant difference. The ferry from Tha Dan pier operates every 30 minutes from 6 AM to 6 PM, with a return ferry from Koh Yao Yai (Manoh Pier) on the same schedule.

Road quality is excellent: two lanes in each direction, well-marked signage, and adequate street lighting near towns. There are no tolls on this route, but there is a ferry fee of 80 baht per person and 250 baht for a car including driver, payable at the pier.

• Total driving distance: 60 km (37 miles)
• Driving time: 1.5 hours without traffic
• Total travel time including ferry: 3-4 hours

The drive on Highway 4 is generally safe, with well-maintained roads and clear signage. However, watch out for motorbikes and occasional livestock crossings, especially near rural areas. There are numerous 7-Eleven convenience stores and rest areas with clean restrooms, such as the one at the 30-kilometer mark near Takua Pa. For longer breaks, the Tab Lamu Naval Base area offers a quiet beach and a small park.

For families, the route is child-friendly: car seats are not mandatory but recommended, and many ferries have open-air decks where kids can enjoy the breeze. There are no major family attractions on the mainland, but the boat ride itself is a highlight. Pets are allowed on the ferry if kept in a carrier or on a leash; few accommodations on Koh Yao are pet-friendly, but some homestays on the island accept well-behaved animals.

To combat fatigue, plan a rest stop every 45 minutes. The coffee shops at PTT stations serve decent espresso, and the air-conditioned cafés in Phang Nga town offer a comfortable pause. The best stops Khao Lak to Koh Yao include Khao Sok viewpoint (if you extend the drive) and the snail farm at Pak Weep, a quirky offbeat spot just before the pier.