Western to MoS. Was following a guy who couldn't control his pace very well, but kept looking back and speeding up when I got close. Motivated me to go pretty hard until he turned off onto Harvard Bridge. Ran through a cramp in the final 1.5 miles. Otherwise, good, hard run. 5.72 miles (through Storrow underpass after Harvard Bridge): 37:56 (6:37 pace) 2.09 miles: 14:15 (6:49 pace)