Levy Trail intervals/Levy Trail

I ran 4X880 yards on the Levy Trail this morning, with three-minute intervals, in 4:34.9, 4:18.7, 4:29.8, and 4:16.2. I'll bet you can guess which were slightly uphill and which were slightly the opposite. I warmed up and down with walks and jogs of approximately two thirds of a mile. Early this evening I walked two miles on the Levy Trail in 30:30.