Gym closed today and since I haven't been running since Friday and didn't want to leave it until Wednesday when the gym re-opens, I thought I'd better try outside today. Was a bit worried as to how my (61 next week) legs would stand up to it, and, sure enough, my knees and hips complained about half way through. However, the creaky noise died away as I went and I haven't suffered any after-effects. I used grass verges most of the way but it's rained ceaselessly for 24 hours so the going was very wet- at least it had the advantage of making me lift my feet up! I also know now that my running shoes are not waterproof! It was difficult to judge my pace and I think I went faster on the running bits and slower on the walking ones, but I did 3.5K in the 30 minutes which is the same as the treadmill so it all worked out in the end. Back to the gym on Wednesday for week 3 and time to double the intervals spent running- sounds like a challenge!