Notes
I had some time on my hands, so I made a trip to Ewing Park. It really is a greatly designed park for trails - great flow for runners and bikers. Downsides are its location, limited miles, and frequent wetness.
My goal was just to run all the trails. I did check a map once to make sure I wasn't missing anything (unfortunately I hadn't). The trails were a lot of fun with lovely downhills and manageable uphills. I kept it chill, though did get warmer than I thought I should.