The Setting: Khao Yai's Cool Highland Roads
Pak Chong is the gateway town to Khao Yai National Park — a UNESCO World Heritage site of montane forests, waterfalls, and grasslands roughly 2.5 hours northeast of Bangkok. [1] The area's elevation (300–800m in the surrounding hills) means cooler temperatures than the Thai central plain, especially in January when morning starts can dip into the mid-teens Celsius. For a marathon, that's a genuine climate advantage.
The Race: Five Distances, Full Marathon as Headliner
The event offers five distances: a full marathon (42.195km), half marathon (21.1km), 10K, 5K, and 2K. [1] That's one of the widest distance spreads of any Thai race on the 2027 calendar, making it suitable for families, first-timers, and serious marathoners sharing the same start precinct. The organiser is Race Up Work Co., Ltd., a Thai event company with marathon production experience. [1]
Registration and What to Watch For
Registration hasn't opened yet as of August 2026. [1] Watch khaoyaimarathon.com for the registration window. Getting to Pak Chong is straightforward: it's roughly 2.5 hours by car from Bangkok, or accessible by train on the northeastern line. Accommodation around Khao Yai ranges from vineyard resorts to budget guesthouses, making a race weekend accessible across price points.
Should You Run It?
If you want a Thai marathon with genuine natural scenery, cool-season highland conditions, and five distances to include the whole family, the Khao Yai Marathon is a strong 2027 pick. Watch khaoyaimarathon.com for registration to open. The 2027 edition is set for 10 January in Pak Chong, Nakhon Ratchasima. [1]