I ran a little farther today on the treadmill, all the way to 4 miles. I ran a steady, easy pace, 8.0 MPH most of the way, up to 8.2 for just the last half mile.
Nobody was going super-fast beside me, but there was a girl to my left who bumped the incline up on her treadmill for several minutes. She wasn't running, but still it made me ponder whether or when I should introduce some hillwork to my training.
Mile 1: 8:05
Mile 2: 7:30 (15:35)
Mile 3: 7:30 (23:05)
Mile 4: 7:21 (30:26)