Good hard Long run day

So, on monday, the day after the half marathon, i decided to go out for a nice easy and slow 4 mile jog as a recovery run. In hindsight I should have taken monday off because i felt worse after the run then i did before. So, I took yesterday off then as a result. Today I went out for about an 8.4 mile run. I did the brooklyn and manhattan bridges, going through the promenade on the front leg and the back leg of the run. I meant to go at a nice moderate-fast pace, and i ended up going a bit faster then I had planned on. i did it in 51:25 for a 6:08/mile pace. I felt pretty good for the most part. I was breathing pretty heavy the first couple miles, but then I eased into a rhythm and was fine for the final 6.