The Great Manchester Run, established in 2003, is an annual 10-kilometre run through Greater Manchester (namely Manchester, Trafford and Salford) and is the largest of its type in Europe. Usually held in mid-May, it is the third-largest mass participation running event in the United Kingdom. behind the Great North Run and the London Marathon. It is part of the Great Run series of road races in the UK. It was formerly sponsored by Bupa (2003-2014) and Morrisons (2015).