I agree with Zoe - it was my first event at this distance, and only my 3rd event overall (10k, 10m, then this - all since March this year) so being very new at this I feel qualified to speak.
There were faster runners, but they didnt really affect what I was doing. Quite impressive to see them, though - for the brief time they were in view. The marshalls were excellent, really encouraging for plodders like me, and a real credit to the organisers.
While Zoe claims not to be fast, she aint no slouch. Not that I am holding any grudges at not being able to keep up