I found a broadcast[1] of it and it seems the humans and robots run in separate lanes. It also looks like there are humans walking/running with the robots to hold them up if they start to fall over. Some of them need it and some of them seem fine running on their own.

[1] https://www.youtube.com/watch?v=lEYVbq7OF3w start at 1:05:00 for video of running robots