I did a 10.5 mile out and back run on the Gateway trail. It was the first double digit run for me. I was nervous, but after my 9 mile run (that was more like 9.8) I was confident I could do it. I didn't stop, but did have to slow to take a gel (I took two, one at 20 min and one at 50 min). They didn't upset my stomach and I had no problem taking them. It was good practice taking a gel on the run.
Miles 0-8 were solid, with times between 8:48 and 9:29. I was pleased with my form and overall solid running. I didn't push it, but didn't take it easy either. Miles 9 and 10 were a challenge (9:59 and 9:49). When I didn't focus on my form it got really sloppy and then I would adjust, and then back to sloppy, then adjust/sloppy/adjust etc. However, when I got back to good form it felt REALLY good. So I think it was a great learning experience about what it should feel like to run. If I can take that good form feeling into my next run I think it could be a real breakthrough. When I say good form, I'm talking about ChiRunning.
The gateway has some spray painted mile markers that seem to be accurate:
26:54 From park to first mile maker (I missed some); 8:58 avg for 3
4:47 from mile marker to turnaround and back to next milemarker
47:47 on the way out
49:31 on the way back (1:44 slower)