Run for 20 minutes at 90% relative perceived effort.
Waiting on the stinkin Garmin site to come up to upload my run, but here's what it looked like:
Ran 2.45 miles with the following paces per 1/2 mile:
.5 mile 7:51/mile
.5 mile 8:22/mile
.5 mile 8:37/mile
.5 mile 8:03/mile
.45 mile 7:54/mile