What can I say...it's Boston. The first 16 miles are a net downhill but that doesn't mean there aren't any ups in there. It was great having spectators along the entire course from start to finsh. The Newton hills aren't really a big deal. Sure, I'd rather have the hills earlier in the race but if you train properly and have a reasonable pacing plan then you'll be fine on the hills. Heartbreak Hill...nothing special...sure it's a decent climb but it isn't that steep and again, planning and training makes quick work of it.