I enjoyed this run last year in London, ON and dates for locations around Canada have been announced for this year, check it out. http://ca.thecolorrun.com
It is a fun 5K race that can be done as individuals or in teams; there were some great team themes in London, ON. I suggest a pair of sneakers that are black or are not worth much. I wore my vibrams and no matter how many times I run them through the wash the chalk paint seems to survive 😛
My mom is using September 21st as a physiotherapy goal, she regrets not joining me last year before her aneurysm. I told her my legs will be her legs and no matter what she will pass every K marker.