sub 40 or 45 min program?

[rook]

Thanks Ed. The weather is still pretty hot here, but it's less humid so it feels a lot better.

Day 20: missed recovery run - didn't have time

Day 21: 45min relaxed

Day 1: 65min at 4:50 pace - felt comfortable

Day 2: 30min easy

Day 3: 5x2k R90 (aim 8:10-8:20)

8:12 - AVG HR 169, PEAK 192
8:08 - AVG HR 168, PEAK 175
8:12 - AVG HR 167, PEAK 177
8:12 - AVG HR 168, PEAK 174
8:06 - AVG HR 170, PEAK 175

HR went down to about 110 between runs.
I felt strong throughout the workout. I went later at night so the heat wasn't as much of an issue.

Day 4: Rest

Day 5: Long run of 26-27k in 2h15 (about 5:05 pace)

AVG HR 147, PEAK 168
I took some energy gels along the way and it made a big difference. My legs started to feel a bit tired toward the end but my energy level was still good and I felt like I could keep going.

Day 6: 30min easy