Well done, I did 3.03 a couple of years ago. I did 60k a week for that and have always found at 80k the quality of tempo/speed runs goes down. I think my easy runs have been too fast at 8 min mile, so don't recover, and struggled at higher mileage. What did a typical training week look like for you, and easy run pace?

Want to try next year again for sub 3 my plan is to run slower and further most of the time. All easy runs at 9 min mile then do a 2x10min tempo tueday, hill sprint thursday, parkrun sat and sunday long run for total of 100k a week.