"run" at the speed of brisk walk https://www.youtube.com/watch?v=oV3hvqRtTgM more of a fast sneaking. I dont think I saw real running non tethered robot before Boston Dynamics, and today running is indeed in reach of $20K toys https://www.youtube.com/watch?v=CIkdq7Zf4Zw

  https://en.wikipedia.org/wiki/Running