Quote Originally Posted by rb336 View Post
I saw an alleged "FBI surveillance tape" a little while ago. SO many people wearing black backpacks

Remember, marathoners, even when it is chilly, generally are wearing shorts and a tee. Often family/friends will meet them with a change of clothes at the end of the race - and they probably carry it in a backpack
IIRC: After the Detroit marathon [[which was chilly) a lot of people were running around with those silver blankets. No idea what they are made of, but they are peculiar to say the least. Of course this has nothing to do with the topic at hand though.