on treadmill. total time 52:44. started out at 6 mph and gradually increased speed to 6.9 mph att 2.5 miles. stayed at that speed for 2 miles then went up my 0.1 mph every quarter mile until the last quarter which I started at 7.5 mph and then went up by 0.1 every quarter lap. splits 9:31, 9:01, 8:46, 8:42, 8:36, 8:08
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