“Boot your tire next time”

You can usually make it back home by "booting" your tire. Here is some information from Sheldon Brown's website, http://www.sheldonbrown.com/flats.html

"If you're on the road and have a tire with a bad cut that could allow the tube to bulge through, you can make a temporary repair by installing a "boot" on the inside of the tire. This can be made of any flexible but non-stretchy material. The ideal thing is a piece cut from an old tire, because this will have the correct curved shape to begin with. I usually like to carry a strip 2-3 inches (50-75 mm) long, cut from an old tubular tire or a high-pressure road clincher. Mountain bikers sometimes use dollar bills folded over, or Mylar food wrappers. One thing that is often tried, but doesn't work too well, is the rubber patches made for inner tubes...they are too stretchy.

A boot doesn't need to be glued in place, it will stay put just from the pressure of the inner tube against the tire.

Even the best of boots should only be considered a temporary repair. The tire will be less reliable, and you will feel a bump every time the tire goes around."

In any event, glad you walked barefoot as you surely would have ruined your cleats...and blisters heal.

Steve