Hi Tyronne, your best bet atm is to ride in Marloth Park. It is very close to Ngwenya.
Have a look on Strava for the different segments.
The one segment is a lap around Marloth Park that is nearly 30km. On this lap you are on dirt roads for most of the time. During the second half you are riding next to/close to the Crocodile River and the Kruger Park. You usually see wildlife on this route.