Heat maps of the Olympic medals, using Google Spreadsheets’s map widget: this one generates a map from a live results feed; Google Maps Mania creates a few using static medal numbers for the top 15, but divides the results by GDP and population. There’s a lot of potential for mapping Olympic performance, but there are plenty of variables involved, especially if you’re going to cross-reference a country’s population, income or size of Olympic delegation. There should be cartograms, at the very least.

One more: via Google Maps Mania, a map of the marathon route.

Previously: Mapping the 2008 Olympics; BBC Olympics Map.