It turns out that the area surrounding our house is rather hilly. It's a bit of a shame that I hadn't fully realised that before I decided I'd attempt 8 miles closer to home. It started out pretty well. I got no complaints from any joints or muscles. But then It started getting a bit hilly. I'd never fully appreciated how hilly these roads were as I'd only ever been along them in a car. Hills disappear a lot quicker when you're going 40 mph+ and not having to put any effort in. I got as far up each hill as I could and then carried on a brisk walk for the rest. This was very much a stop start session but I covered 8 miles in the end in just under 1 hour 25 minutes. Only 5 minutes off my pace and lots of hills under me. Only after analyzing the run do I feel a little better. The Suunto T6 has a pressure sensor that is pretty good at measuring altitude and that showed I'd been up (and down) several rises of over 20 metres in under half a mile. That's way way worse than the profile of Newcastle suggests so I may just make it up some of the hills in Newcastle after all.