Yes, there's always ground contact time when running and, if you've got a relatively modern GPS watch, you may have noticed the term "contact time" nestled among your post-run stats.

No track. Four and a half hurdles. Varying practice locations. It's not always easy for track-less Purdue Poly. Why athletes still love it.

While running on the road can feel a little jarring on the body, I felt next to no ground impact forces on this track and a sense that I could keep going, without complaint, for a long time.