There was a second flat a couple of minutes after the first. Current theories are 1) pinch flat, and/or 2) the rim tape shifted causing spoke-related puncture. Kudos to Grangier for fixing the rim tape!
We are a Palo Alto-based recreational road cycling club that rides throughout the South Bay and Peninsula area. Established in 1968, we welcome riders of all abilities and interests. Please take a look at the "Pages" tab on the home page to learn about our ride rating system and our club.