Longest run ever!!!

I did 15 miles today-it took a lot longer than I expected also. I know training runs are suppose to be slower but come on-I was expecting to be around 3 hr-it took more like 3 1/2. I hope my 20 mile run in September takes less than that. I ran from Bethesda to Georgetown. It was nice in Georgetown and we had a small lunch and ran back. Even though it was hard to get started after relaxing for an hour.