The Grand Race around Lake Viljandi (Estonian: Suurjooks ümber Viljandi järve) is an annual cross country running competition that takes place around the Lake Viljandi in Viljandi, Estonia. It is also the oldest traditional running event in Estonia and has been organized already since 1928. It is held annually at the 1st of May. The history of the race goes back to an idea of a schoolteacher T. Andresson.