Ramkhamhaeng National Park, locally known as Khao Luang, was the first historical national park established in Thailand in 1980. The area covers steep mountains with shapes resembling ancient pagodas deep within the forest. The highest peak stands approximately 1,200 meters above mean sea level. Geographically, it is a solitary mountain rising majestically over the Yom River basin. Historically, this area was vital as a primary water source, where ancient Sukhothai citizens used irrigation systems to divert water to the old city. It was also believed to be a sacred site for royal ceremonies during the Sukhothai period.

The heart of the visit is the trek to the summit of Khao Luang, a distance of approximately 3.7 kilometers. Although the distance may seem short, the trail is exceptionally steep throughout (averaging 45-60 degrees). Hikers must test their endurance through various forest types, ranging from dry dipterocarp and mixed deciduous forests to lush hill evergreen forests. At the summit, visitors will discover four significant peaks: Khao Narai (the sunrise and sea of mist viewpoint), Khao Phra Chedi, Khao Phu Ka, and Khao Mae Ya (the sunset viewpoint). Each peak offers a unique and impressive perspective.

Beyond the stunning scenery, the park is home to diverse wildlife and rare plants, particularly medicinal herbs famous since ancient times. The summit features a large natural grassland known as Thung Ya Mueang Bon, providing a wide area for camping amidst cold weather year-round. Stargazing on a clear night and waking up to the first light of dawn over the Khao Luang range is a truly rewarding experience for such a challenging journey.

Today, the park is highly popular among adventure seekers and landscape photographers. Visiting this site offers a different perspective of Sukhothai, showcasing the natural grandeur that has nurtured Thai civilization for centuries. It remains a must-visit destination for hikers seeking to record their memories as a "Conqueror of Khao Luang Sukhothai."

• From Sukhothai Town (Municipal Bus Stop): Take the local wooden bus the iconic symbol of Sukhothai on the Sukhothai - Khiri Mat route. Inform the driver that you wish to get off at Khiri Mat Intersection (The journey takes approximately 45 minutes). From the intersection to the National Park entrance is a distance of about 12 kilometers.

• Motorbike Taxi: Services are available at the market near Khiri Mat Intersection. The fare is approximately 150 - 200 THB.

• Private Charter: If traveling in a group, it is recommended to charter a local wooden bus (Songthaew) directly from Sukhothai town to the park entrance. The price is approximately 600 - 800 THB.

• Return Trip: There are no public vehicles waiting in front of the park. It is highly recommended to ask for the phone number of the driver who dropped you off to schedule a pickup for your return. Alternatively, you can contact the park officers to help coordinate a local hired vehicle for you.

• Hiking Time Limit: The park allows hikers to start their ascent from 08:00 onwards. Climbing is strictly prohibited after 15:30 to prevent dangers from trekking in the dark.

• Water and Food: While there is utility water at the summit, you should bring at least 2 liters of drinking water per person and prepare dry food. (There is a welfare shop selling food at the base before the start of the trail).

• Porters: Porter services are available to help carry luggage. Fees are calculated by weight (approximately 25-30 THB per kilogram), which significantly reduces fatigue.

• Recommended Months: November – January is the best time to visit due to the cold weather and the highest chance of seeing a thick sea of mist.

Admission Fee:

• Thai Citizens: Adult 40 THB / Child 20 THB

• Foreign Visitors: Adult 200 THB / Child 100 THB

Opening Hours:

• Visitor Center: Daily 08:00 – 16:30.

• Hiking to the Summit: 08:00 – 15:30 (Ascent is not allowed after 15:30).