17°C, milky sun and no wind.
Started out on the Jake with the commuting wheels fitted. They have Schwalbe Durano tyres for the fast but puncture resistance. Less than a mile out a sharp high pop rang out. Instantly the front tyre was flat as I made a right-turn on a busy A road.
Rather than fix it there, I walked back to get the other bike.
Here is the puncture:

Part of the tube is actually missing. Looks to me like the tube was pinched inside the rim and chose a bad moment to burst.

I rode fixed with MapMyRide+! Distance: 36.04mi, time: 02:15:09, pace: 3:45min/mi, speed: 16.00mi/h.
http://mapmyride.com/workout/935796653
Plan B, grab the fixed bike, the Paddy Wagon and rode the same route. For only the second time this year I got up Bannister Hill. This time was on the higher 42×16 gear. No serious struggle today.
Those wheels are brilliant. So fast and nimble.
later: it turns out that the climb up Bannister Hill was my personal record 9′.08″.
Bask!