New Long run (20.42mi)

I've gotten a bit behind on my posts here, so I need to catch up. Over the weekend, I managed to get out on Sunday for my longest run yet... 20.42 miles... All things considered, it went really well. The DFMC long group run was on Saturday this weekend, but the way my schedule worked out, that didn't really fit in so well, so I opted to do the long run on my own on Sunday. I decided it was easiest just to do an out and back loop from my apartment, very similar to what I have done in the past when I run out to the Woodland T-stop for the Thursday night Crossroads runs... heading out down Comm to Cleveland Circle where I cut over to Beacon st and from there I follow that out all the way to route 16/Washington st, and then come back along the course over the Newton Hills. I was a bit weary about the hydration factor, since last weekends group run had worked out so well with the provided water/gatorade stops, but figured I'd just have to suck it up and carry something with me. I stopped at the 3.75mi mark and ran into a Walgreens in Newton Center to pick up a 24oz gatorade sports bottle, and sipped on that every mile or so. Although I just carried it in my hand, it wasn't all that bad, and was definitely good to have hydration with me. I finished the bottle just as I came upon the Marathon Sports store back on Beacon in Brookline, around the 13.5mi mark. I refilled my gatorade bottle with water from their bubbler and grabbed an energy shot as well. The next 7mi or so I pretty much ad libbed, running around the river a bit, and working my way slowly back to my apartment. It took me 2 hours and 45 minutes, for a pace of 8:05min/mi. I was pretty happy with this time for a cold Sunday training run by myself and afterward I definitely felt like I still had something left, so as I stand (and of course realizing it's still over 2 months out at this point), but I'm feeling pretty good about how things might go on race day...