Run warm up/down 18:58  2.0 mi (9:29 / mi)
Went over to the MIT track to run 4x800s, at the Yasso pace, so 3:00.
Run intervals 12:06  2.0 mi (6:03 / mi)
4x800s, nice morning on the track.
Garmin/Strava is doing a weird thing with my HR; I think I looked at it early on when Strava says it was 180 and it certainly wasn't.
Anyway, 3:04, 3:01, 3:02, 2:59, starting from a different corner each time. First two finished on curves, second two on straightaways. HR was relaxed, nice L3 156, although I pushed it to 160+ at the end of the last interval to go sub-3 on that one.
Plan for Boston: try to stay near 150 until Lower Falls.