I just did w8r1, I change my route pretty much every time. Today's error was to try to start on an uphill section. Well, I just couldn't make it so had to extend the warm up walk to 10 minutes. Then I had to stop a couple of times to cross roads. I 've just mapped the run at 3.5k. I was first disappointed that it wasn't closer to 5k, then I thought hang on, 2 months ago you couldn't even run 100m! So that's my reality check for today, I can't believe I've come this far!