Sukhothai to Chainat: A Complete Road Trip Guide

The route from Sukhothai to Chainat follows Highway 12 southeast, then merges onto Highway 1 (Phahonyothin Road) toward Chainat. The journey covers approximately 120 kilometers, typically taking 2 to 2.5 hours by car, depending on traffic and stops. This corridor connects two historic Thai provinces: Sukhothai, the first capital of Siam, and Chainat, a lesser-known riverside province.

The drive is notable for its transition from the low mountains of the Phi Pan Nam Range to the flat, fertile Chao Phraya River plain. Sukhothai sits at an elevation of about 60 meters, while Chainat is near sea level, giving a gentle descent that makes for easy driving.

Highway 12 is a four-lane divided highway with a posted speed limit of 100 km/h outside urban areas. The road surface is in excellent condition, typical of Thailand's primary routes. From Kamphaeng Phet, Highway 1 is similarly well-maintained and wider, with some sections having six lanes.

Fuel stations abound every few kilometers along both highways, including major brands like PTT and Bangchak. Diesel is widely available, essential for pickup trucks. As of 2025, diesel prices hover around 32 THB per liter, and gasoline (Gasohol 95) around 36 THB. A typical passenger car will consume about 8-10 liters for this trip, costing roughly 300 THB.

Tolls: There are no toll roads on this route. However, budget for potential parking fees at attractions, typically 20-50 THB.

• Road: Highway 12 then Highway 1 (Phahonyothin Road)
• Distance: approx. 120 km
• Driving time: 2-2.5 hours without stops
• Speed limit: 100 km/h on highways
• Fuel cost: approx. 300 THB for a car

The route is generally safe, with well-marked lanes and adequate street lighting near towns. However, watch for agricultural vehicles crossing the highway during harvest season. Keep a safe distance from trucks and motorcycles, which are common.

For families, rest stops are plentiful. PTT gas stations often have clean restrooms, coffee shops, and convenience stores. The Wang Khwai rest area, about 30 minutes from Sukhothai, has a playground for children. In Chainat, the town offers a riverside promenade with playground and local food market.

Pet-friendly: Most gas stations allow pets in the car at fuel pumps, but rest areas with food courts may restrict pets. It's best to plan picnic stops at natural areas like the Khlong Wang Chao National Park, which has pet-friendly trails and designated picnic spots.

Fatigue management: The drive is short, but mid-trip breaks are recommended. Stop every hour to stretch and rehydrate. The Sukhothai-Chainat route has several 24-hour gas stations that serve as safe overnight spots if needed, though overnighting in Chainat or Kamphaeng Phet is more comfortable.

The scenery shifts from the forested hills around Sukhothai Historical Park to the expansive rice paddies and sunflower fields near the Chainat border. Between November and February, sunflower farms bloom, turning the landscape bright yellow. The best spots are around the Nong Bua Rawe district, just south of the highway.

Local commerce thrives along the way, with roadside stalls selling fresh fruit like mangoes and pomelos, especially near Kamphaeng Phet. In Chainat, the famed Chainat mae prik (dried chilli paste) is a popular souvenir, sold in jars along the main road.

Chainat is also home to Chainat Bird Park, the largest aviary in Asia, which is a major attraction for families. The park houses over 6,000 birds from 300 species, with a walk-in aviary that lets visitors feed the birds.

For history buffs, the Kamphaeng Phet Historical Park, a UNESCO World Heritage Site, lies just off Highway 12. It features the remains of ancient temples and a city wall, offering a quieter alternative to Sukhothai's more famous park.