In short: Poor route selection, no mile markers, congestion at the front In full: The first 2 or 3 miles was just infuriating as the sheer number of slow runners near the front created too much conjestion on a poorly planned route. Couple with this with no visible (to me) mile makers for 10 miles, meant pacing was extremely difficult.
Why wes there no markers at start to guide runners according to predicted time? Why do so many slow runners insist on starting at front? Big shame as even with poor weatehr this event could have been so much better with different route and better organsiation