Well this morning didn't get down to 62 deg as forecast, only 65 deg, but that was good enough and humidity was much better. I'm still not an early AM waker, so I didn't get to the run path until 6:10 AM and started around sunrise.
Today was my longest run to date: 12.3 miles. My goal was at least 11 mi, so I was pleased that I was able to stretch it out. I carried a 24 oz bottle of water and had a 24 oz bottle of gatorade in my butt pack, and stashed an extra bottle along my path, just in case. The lower humidity cut down on my sweating and my thirst, and I found that I didn't need the extra bottle at all.
Since I did running and strength two days ago, and swimming/biking yesterday, my legs weren't as "fresh" as on other long run days. So my starting pace was near 15mm, and I kept close to that for the first half of the run, then it started to creep up. Also my heart rate for the first 7 miles was fairly constant near 141. I set out today with a 3 hour time target for (maybe) 12 miles, and finished 11.6 miles in 3 hrs. Total time for 12.3 miles was 3:12.
My HM is in 4 weeks, and my target time was 3:15 (though 3:00 would be better). I've got to improve my pace a bit to get in that time span. The good news is most of the Nashville course from mi 6 - mi 11 is down slope, so gravity will offset tired muscles. Of course the main goal is to just finish the race, and I know now that I can do it.
It seems to me that my heart is capable of sustaining the distance, but I've just got to get the rest of my body parts to the ability to sustain the effort over time. When I do my shorter runs, I try to push my HR to the next zone more often, for longer periods, to help build that endurance and improve the pace.