I flew in to Boston for Park-O finals (okay, and some other stuff too) and went straight to the venue and realized that I didn't have any pants with me except the ones I was wearing: work chinos. So I ran in those. It was a little warm but they're sturdy enough my legs didn't get blueberried at all!
Nice! Yeah, I also didn't have o-socks or gaiters of any kind, so I did get some poison oak, but luckily not too bad!!