I was thinking about this the other day whilst out on the mtb. A "race" betwixt a road rider and a mtb biker. Both start at Penicuik Town Hall and End at Balerno Parish Church
Team A (road) must go inside the bypass.
Team (mt) B must go over the hills.
Over the hills should be shorter but starting at Penicuik means there is some road work where the road team gets away. Who do you think will win?
I've excluded team Team C (yclocross) as I don't think there is a route that is knarly enough to slow a crosser down to make it fair to team A but still long enough to balance the extra weight of an off road.