From Bangkok (250 km from Korat): Drive on Mittaparp road number 2. The change to Ratchasima-Pakthongchai highway road number 304 (19 km from downtown Korat). In downtown Korat you can take bus number 4129 to get to the zoo.
Where to get a bus: You can get a bus from downtown to the zoo at The Monument of Tao Suranaree, Bus stop opposite The Mall, Tesco Lotus, and Pak ThongChai T-Junction or Sam Yeak Pakthongchai.
Bus Fee: 20 Baht