leg 1 is 4.8 mile so 20-25 mins? That would be impressive on a flat road.
Leg 2 9 mile/3280ft - that makes me think Fairfield ish. 80 mins + for the front end?
So I'd guess 1:50 at the front end, if that's the case it will be around 3:40 at the back after 2 legs.
I fully understand about marshalls which is why I asked about a mass start for leg 3.

Anyway Iain, you know the area, I don't. Perhaps the stats don't quite reflect the pace of the terrain.