5 out of 5 days this week: Sunny skies. Temps today in the low 30sF. No wind. I got a stick or something in my chainring. I extracted it on the MUP at a road intersection. Meanwhile a guy on a bare-bones roadbike entered the MUP from the road. He was dressed like he knew what he was doing. He rode like it, too. I barely reeled him in, we were going about 23MPH. I started breathing hard so I slowed back down. (Keep in mind I'm riding a 30+ pound dualie Trek with fat knobbed tires.)