How do the stride lengths of the elite compare?
The video below captured Kenenisa Bekele, Haile Gebrselassie, and Mo Farah, at mile 12 at the BUPA Great North Run in 2013. At this point, the 3 runners are running at the same speed as they had done for most of the race; shortly after this point Bekele broke away.
We can see a very real differences in the stride lengths. If the speed is the same