Dirty Reiver Cyclocross endurance ride in Northumberland: Discounted entry

I've not done it before, but I don't think the route sends you up any serious climbs. They don't publish the route until 2 weeks before the event. My impression from people who've done the ride is that it's rolling.

Any ideas as to how lumpy it might be?

^here's a possibly better informed answer than mine :)

Of course the route may vary year on year.