Did a Marathon last year and really suffered during it with painful hips and knee. Recovered fine. Did a half marathon yesterday and could feel the twinges starting again. Had a few twinges whilst training for it once over 10 miles. I run regularly and did RED January with no problems.
I enjoy the half marathon distance but am wondering if I need to start thinking about shorter distance? Or just start running a bit slower? I did it in a similar time to my first one about 7 years ago.
I don’t want to give up running or become ‘old’ but don’t want to injure myself. In my head I’m about 19 
I was just wondering what distances others fast approaching/or over 50 run??