_(With a nod to "fixedgear":http://fixedgearcycling.blogspot.com/ for the formatting)_ Finally ordered a cyclocomputer for the fixie to start keeping track of my riding so I could measure progress. Went out just as the sun was getting low, went down Old Spanish Trail past my usual turn-around point of Saguaro East, and made it almost all the way to Colossal Cave. The ride gets much more interesting further east, with lots of rolling hills(!), including one nasty one that nearly equalled some of the steeper ones on my Pittsburgh commute. I turned around after that one (it's uphill on the way back), and made it back just as it was falling dark.

15.68 miles 27.9 mph max speed 15.1 mph avg speed 1:02 ride time