User blog comment:Skyblade743/Every Unsolved Question in Sonic./@comment-26453549-20180102192738

Shaggy and Scooby always run side by side when fleeing in terror from a monster. If a Great Dane's running speed is 30-40 mph that means Shaggy can run at the same speed. This means that Shaggy is the fastest human alive beating Usain Bolt's top speed of 27 mph.