[MENTION=314122]wilfried[/MENTION] and I rode the NYC Century ride yesterday. I was riding my Lemond with the 650b wheels and Pari Moto tires. I got a flat on the rear just a few miles into the ride. I had my usual tool kit which has 700c spare tubes and no 26" tubes. I could have used one of my spare tubes, but it seemed riskier than the proper size tube, so I made him wait while I patched it. It didn't take long, and the patch is holding.

I ran out of time to finish the ride, so I did a total of "only" 87 miles. The good news is that I was surprisingly fresh after all that.