South Coast – 2-6 hours from Reykjavik – long drive if you go all the way to Jokulsarlon. Not too far to go to/from Reykjavik in one trip if you just go to Skogafoss.
To do: (in order of approach from Reykjavik)
Seljalandsfoss (tall waterfall)
Skogafoss (tall, wide waterfall – almost always a rainbow if any sun is shining), Vik and Reynisfjara Beach and basalt columns (be SO careful of the water here – don’t get too close or turn your back on it as many visitors have been washed into the sea), Jokulsarlon glacial lagoon (amazing blue water with chunks of icebergs floating off to sea – also check out the black sand beach closer to the coast – beautiful icebergs sitting on black sand and you can walk among them).
Could also do a glacier adventure here as the road to Jokulsarlon (Route 1 – the only road around the island) drives right south of the largest glacier in Europe (Vatnajokull).
Eat: Gamla Fjosid – an old cow farm house near the road on the right from Reykjavik. Very good food. It lies between Seljalandsfoss and Skogafoss.
Stay: any cute place near where you want to stop – or just drive back to Reykjavik