The marathon event in Khon Kaen has almost a completely different feel to Chombueng marathon. The Khon Kaen International Marathon started in 2004, but quickly gained fame because its full marathon distance is certified by Association of International Marathons and Distance Races (AIMS), while its half marathon and 11.55km distance categories are also certified by International Amateur Athletics Federation (IAAF). These course certifications mean that results from this run can be used as proof for you to be eligible to take part in future bigger marathon events globally. Khon Kaen is located in north eastern Thailand and is a cool in January. In addition to the beautiful countryside, this region is also famous for its food cuisine.