Your R.U.N. animation should be like this, a looping animation of a character running. Of course, you need to add lots of creativity and you-ifying your animation. You can remix this example for your entry, or make your own.
I remixed this from my friend @GIZ0M0 check out the original: https://scratch.mit.edu/projects/1220406429 :) Also check this out if you dare >:D: https://scratch.mit.edu/projects/1222865465/