Are we there yet?

So today I set off on my longest run to date. I know that you're only suppose to increase your runs by 10% to decrease your chance of injury, but I couldn't find a 2.75 mile loop. So the loop became a 3.2 mile loop. Lord have mercy! I tried to run the thing non-stop but alas I couldn't. About 2 miles into it I had to take a short walk break. But I resumed running and managed to straggle back home. The strange thing is that even though I walked for 2 minutes, my pace went down 30 seconds! I don't get it, but I'm not complaining. I must say that I probably bit off more than I can chew, but I'm glad I did. I was a great feeling accomplishment. I'm sure that I'll be pretty sore in the morning. I can't wait to get up and do it again in 2 days.