My GPS says it looked like this:
The rolling green is the elevation -- the trails were on hils, and the 30 minute mark felt like a mountain.
But, the day was beautiful, and we rested afterwards, staring at the lake and hearing the bullfrogs. Fiona is too polite to mention it, but she beat me by 1 second!
(In retrospect, running 13.1 miles the next day turned out to be a mistake)