18 miles 8/12

Did a portion of the Austin marathon course this morning. Conditions were nice, with moderate temps, and moderate humidity. Here is the route ( http://www.gmap-pedometer.com/?r=359705 )
It was 18 on the dot. Started at 5:30 up at S. Springs and Jollyville and eased on down the road. I decided that today was going to be a recovery day along with an endurance run to get my body used to long runs (over 14 miles) again. Therefore, I decided to enjoy the company (which was easy, based on the runners I spent time with) and the scenery.

Total time was 2.23 which is about 7.50s or so. I felt good until making a pit stop about 8 miles in, then the legs felt dead for the rest of the run. I am wondering if I need to pick it up more and if that increased turnover will help the tiredness. May try this next week, when i plan to run a modified daniels long run that incorporates some time at tempo pace as well as running easy.
I didn't eat or have coffee before the run, and only got 4.5 hours sleep and this change in the normal routine may have contributed to my general tiredness during the effort.