The Golden Circle area reaches from Selvogur west of Þorlákshöfn to the east of the town of Hella, along the seaside, and into the highlands. The area is as vast as it is diverse; there is a wide variety of attractions but the main three are Þingvellir National Park, Gullfoss, and Geysir.
The Golden Circle is accessible all year round, the roads are open and well-maintained in both summer and winter.
If you decide to drive and not go with a tour company, make sure you follow some basic safety procedures such as making sure the car has winter tires, if traveling in winter, you have checked the road conditions for the area you are going to and weather forecast.