My final 20-miler for the programme is in the bank now, and it's all downhill from here! I was aiming for sub-3 and finished just over (somewhere between 2:59:30 and 3:00:30- not sure exactly), about 10 minutes faster than last time I did this route (just before marathon 1). 10 minutes didn't feel like much, but then I realised it was euivalent to 30s/mile, which is exactly what I'm hoping to lose in the marathon (9:20 pace in my first, am aiming for 8:50s this time).
I'm still only feeling like 3:50 is a possibility, rather than a probability, but unless something drastic changes between now and then, I'm going to run as if 3:50 is the goal and just see where that takes me.
Update: just measured my route more carefully and it's *just* over 20 miles (20.14), which means I ran *just* sub-9. Awesome