The oldest known road race in Thailand is back this month for its 33rd annual edition. The race will start and end at the River Kwai Village Hotel and will run its course along Highway 323. With distances of 21.1 and 10.5 kilometers, runners are sure to break out into a decent sweat. People placing 1st to 5th in the marathon will receive special trophies along with T-shirts designed by New Balance. After the running is over and participants have worked up an appetite, breakfast will be served at the River Kwai Village Hotel.