Ran Half Marathon 1st in 15 years

As the title says, I ran my first 13.1 miles in 15 years!! I got a late invite by my buddy to go camping in the Smokey Mountains. Arrived on Friday and ran 2.5miles before I went to bed. Most of the camping crew wouldn't be in until noon time Saturday, so I thought I would go for another run before everyone arrived.
While I was stretching, the entire University of Tennessee track team unloaded from 2 buses into the parking lot. They were there to run and train on the hilly 11 mile loop of Cades Cove. I had no intenions of running more than 5 miles Saturday morning, but their presence inspired me to try to run the shorter 8 mile loop. The ranger told me that one of the cutoff points was closed and that you had to run/walk/bike either 8 miles or 11. Before I took off to run Cades Cove, I warmed up 2 miles around the campground and then shot over to the loop. After a bit, I passed the closed cutoff point and continued running. I reached the other cutoff and noticed 2 roads. I asked the ranger which road was the 8 miler and he said, "Son, the 8mile loop was back 2 miles ago. You are on the 11 miler." *Gasp*, What?? I looked at my watch and I had already run 7.5 miles! Stupid me - I forgot that I had already run 2 miles warmup to the loop, AND I missed the cutoff. I was enjoying the scenery so much that I didn't notice that I had passed 2 turnpoints instead of one.
Predicament: Largest run this year was a 10 miler back in March, Longest run of 8 miles was 2 months ago, I still had 5.5 miles left to go with only 16 oz of water left.
A little fear set in, but then I thought that I could always start walking if I got tired and hitch I ride by a tourist if I really had to.
I finished talking with the ranger and off I was again. I only had to walk for 2 big hills for a total of a minute. You know what really got me through the run? No less than 40 people that passed me in their cars, gave me shouts of encouragement as I ran. As I approached the last hill that finished off the loop, I looked at my watch and I was at 12.95 miles. No way was I going to stop at anything less than 13.1 miles!!!!! A half marathon distance.
I ran back to the campground and the rest of my buddies were there. When I got within 100 feet, they began clapping and shouting. How cool is that?? I hit my watch and my final time was 2hrs 20mins 20 seconds.
I did it!!
This was the longest that I've run in total time EVER! Earlier this year , I remember thinking that if I was to run a half marthon race that I wanted to do it in less than 2-1/2 hours. I am excited that I avg'd less than an 11min mile(10:51 to be exact.)
Later in the evening, I started cramping so my buddy and I ran another 2 miles. It felt good. I also stretched for another 20 minutes. 15+ miles for the day.. It was a good day...