Went for my longest run ever a couple days ago, a 20 miler. Kept up a good pace, did 6 of the miles on a treadmill when it got dark and was doing about 6:48 per mile and felt slower than what I was doing outside. My legs felt like garbage the last few miles though. That pace will get me under 3 hours for the full marathon, which will qualify me for Boston by over 10 minutes, so that’s good. However, it’s hard to imagine running over a minute faster per mile for a full 26.2 miles. I got my work cut out.