Normally we like to torture you with overly-complex challenges with a bunch of rules and stipulations, but sometimes we just have to keep it simple. This next challenge will be insanely simple. Run a 5k. That's it. So in true challenge fashion, here are the bulletpoints:

Run a 5k. Like... really fast. Go for a PR.
No treadmills or pausing your workout. Just go.
Show the results on the event page.
Do this by the January 4th at 10pm and get 2 points.

It feels weird finishing this post on such brief information... but yeah. That's it. Just run.