I did this event last year (as my first ever race) and finished in 2:49, and there were still people finishing behind me. I think the last finisher was about 3hrs 20.
Having made a serious effort this year and with a couple of other events in between i am looking to finish in under 2:15 ( i recently did a full HM training run in 2:14:57)
I am sure that there are some people out there that would call 2:15 slow, but for me i'm well chuffed. and anyone who finishes, regardless of time, has achieved something.