Here's my route.

The elevation on that is fairly indicative of riding anywhere around here. I must admit though I only found a couple of the hills really challenging. The start of the ride is great. A short uphill, then a very steep and smooth downhill (43mph). Then there's a long but fairly gentle incline up to the highest point in the route.

There was one point where the route goes to a single track road up a hill to some communications masts. I was considering just turning around at that point :) The last thing I was looking forward to after that long slog up hill was a short downhill followed by what looked like a vertical climb. Turned out that I was at the top before I even felt it, so it looked worse than it was.

The worst bit was definitely the last hill. It's very steep (a small road alongside the original first downhill) and I had to stop several times. Once for a group of rather nervous horses that didn't look pleased to see me. I said hello to the horses and they calmed down a bit once they realised I was just some sweaty fat bloke.

Fantastic ride, it's those sorts of rides that makes owning a bike worthwhile. Just wish I'd had a bit more time to go a bit further afield.