In reply to Roadrunner5:
> Was it an accurate 20? If 20 in 2:15 sub 3 will be a formality.
In theory, I ran 2:15 at the Trimple 20, 5 weeks before my last marathon, I think I could have run 2:58-2:59 that day, unrested after a heavy weeks training. At the marathon, it was shit from 10 miles and I knew sub 3 wasn't happening from before half way.
A 35 minute 10k runner, should be looking at sub 2:10 though for 20 miles and with the right training probably 2:50 or better for the marathon.
Problem is, not everyone can convert their times over shorter distances to the marathon, I haven't managed it yet.