After 5 months of training and a 10k and 2012 Bupa Great North run i got struck down with the PFPS (runners knee). Wow did it hurt.. four months, 3 gp visits and an x-ray later i went out or a run last night..thought i should start off with a 5 miler ..WRONG . only managed 2.98 miles ... legs hurting but the knee is fine .. rest today but back at it tomorrow.. hope i can get back into it as i have penciled in a few half marathons this year starting in April..