Each year on the last Sunday of September, the starting gun sounds for a world-class road race that has become a true Pittsburgh tradition for the past 41 years. The Great Race – established as a 10K race by the late Mayor Richard S. Caliguiri – has attracted more than a quarter million participants since 1977. Over the years, this popular fall fitness classic has grown to include a 5K run/walk, running clinic, two-day expo and children’s race…with more than 16,000 individuals taking part in these various activities annually.