Early morning ride trying to beat the smoke from our (now 10) Colorado wild fires.
All of a sudden, I could no longer turn the pedals. Generally, I sort of work my way through something like this by back pedaling, etc., but absolutely no luck this time.
So, I stopped (actually I had no choice but to stop) and looked carefully. This bike has panniers with some supporting straps, etc. Well, one of the straps had come loose, and had totally wound itself around the rear cogset. I got the bike upside down, and in just a couple of minutes was on my way again.
So, what has caused you to stop pedaling?