How often do the Summer Olympics take place?
Once every four years (an Olympiad)
4 years apart.
The Summer Olympics take place every four years and the Winter Olympics take place every four years. When considering both the Summer and Winter Games, it is an Olympic year every other year. The next Summer Games will be in 2012 in London and the next Winter Games will be held in Sochi, Russia in 2014.
The Summer Olympics occur every 4 years, and the same goes for Winter Olympics; except Winter Olympics take place always 2 years after the Summer Olympics. For example, Summer Olympics went to Beijing in 2008, Winter Olympics went to Vancouver in 2010, and Summer Olympics will come back on in 2012 in London.