Went to a bike path that I've never been to before. It's nice and flat, but there was a ton of broken twigs and sticks all over the place, and a few gravel roads to cross. I did a good job of avoiding all the debris on the path, but when I was just over 2 miles from my car I put my head down for a about 20 seconds and ran through a bunch of crap. I new it wasn't gonna be good. I could feel my rear tire slowly losing air. I made it back to the car, and fixed the flat when I got home. There were 2 cuts through the tire. I had to patch the tube and tire. I guess I'll be upgrading to some 25c tires sooner than I thought. Then I'll just use the current tires as my winter training tires on the rollers. Other than the punctured tire it was a solid ride. I wanted to keep my average over 19mph, and I did that without having to kill myself. If the path was clear I would've pushed a little harder, but I was pushing my luck as it was.