5 miles on the treadmill

I jumped on the treadmill for a quick 5 mile run today determined to maintain an 8 min/mi pace. I think that because I have been running these long distances recently I have not been expecting fast paces and got used to running slower. Eight minute miles is not too fast for me, but I have gotten unaccustomed to the pace. I accomplished my goal and even increased the pace for the final mile to complete the 5 miles in 39:48. I have got to remember to hold on to my pace in my long weekend runs in order to be ready for the marathon. You get used to the exertion, but your brain tells you to slow up even though you can keep going.