Simplify the following text for a Grade 4 native English-speaking person.
Original: Gunnedah is located on the Oxley and Kamilaroi Highways providing road links to the state capital Sydney at a distance of 475 k and the nearest regional center Tamworth is 75 k. It is also linked to Sydney by rail .
Simplified: Gunnedah is located on the Oxley and Kamilaroi Highways . It is 475 kms from Sydney .