Umoja is situated on the Silonque Estate, 8 km north of Phalaborwa, approx. 5 ½h drive from Johannesburg (500 km).
South Africa is a country that you can visit easily by rental car. The larger cities are often connected by a 4 lane highway and local roads are generally in good condition. Beware after the rainy season of the potholes (larger holes in the road), especially on the smaller roads.
Prices of rental cars are reasonable and gasoline is not expensive in comparison with most European countries. You can rent a car at all the airports with a credit card and valid drivers licence. Please check beforehand if you need an international drivers licence.
The fastest route from Johannesburg is the highway via Polokwane and Tzaneen, a spectacular route of about 5 ½ hours. The alternative route is via Lydenburg/Dullstroom or Nelspruit/Hoedspruit, with a number of tourist attractions.