Bootiful evening run by markstreet

Only eight weeks to go and the training is going very well for the London Royal Parks half marathon but the knees dont like it and the back even less. Anyone got any suggestions for easing lower back pain after running? I guess having a long back as I do and heading up to 50 I have had it really. But hey quitters dont win so I intend to make it to the start line even if its with a zimmer.