That Boston dynamics robot runs at like 4 miles an hour. The fastest robot dog runs at like almost 12 or something.
Average running speed for humans is between 6.4 and 8 mph depending on gender, etc. And if the obesity rates are correct, I think that it's probably a lot lower and for incredibly short bursts if anything.
After looking it up, it says about 8.86 mph after converting from 13 feet per second. Some sites say it's 13 mph, but I trust wired when they state 13 feet per second.