7 weeks on from original injury. I have been doing a few runs on the treadmill and ventured outside for the first time on Sunday. I am ok for about 27 mins/3 miles and then i start feeling the tightness in the back of the knee, once i feel it, it gets worse with each few stides untill i have to stop and stretch it. Then i am ok to go again for another 10 mins before the same thing happens.

I dont have any pain afterwards just a slight awareness which has gone within 24 hours.

Obviously i have now had to give up the idea of running the London marathon this year but would like to get back out injury free and start building my fitness again!

Any suggestions what i may have done, would strain have healed by now? ive had a couple of deep and very painfull sports massages and been proded around but tendons & ligaments appear to be fine.

Do you think i should leave off the running for a few more weeks and then try again or is it safe to assume that as long as it doesnt feel any worse after a short run then i continue with caution?

Any suggestions will be greatly recieved.