Did 2x2 miles ouside today with .75 mile recovery in between. (mind you this workout was mostly downhill except for the 1st mile which was net uphill and 4th mile which was equal on elevation gain and loss) Splits were 6:27, 5:59, (.75 at 7:10 pace recovery) last two miles were 6:08 and 6:29. (6:23 avg pace for 4.75 miles) Felt pretty tired by the end of this one-especially once I was home. I think I was dehydrated and felt much better after drinking lots of water.