Last night I did 35 minutes of Threshold Training. In a threshold run, I'm not aiming for any particular pace, but instead trying for a consistent level of effort. Following some magic mile practice on Saturday, my legs really weren't able to produce a pace fast enough to get my heart rate up where I wanted it. I did manage to gain 18 seconds per mile over last Tuesday, and I did struggle a lot around the 25 minute mark.
Thursday will be an easy recovery run before Saturday's 6.5 mile long run. That's very near half the distance I'll do in the actual race, and I'm interested to see what happens to my pace in a run that is longer than an hour.