A 10k on the treadmill

Today I hit up the treadmill after work and managed to knock out a 10km (6.2 mi) run. My iPod said it was actually 6.39 miles, but I'll go with the treadmill's readout on this one. I pushed the pace pretty hard to see if my legs had it in them, and was happy with the results. I figure that if I decide to run the marathon in Philly in a couple of weeks, I need to get any "hard" workouts out of the way ASAP.