I completed C25k over a year ago and I've been a pretty regular runner ever since - 2x half marathons last year. That said, I slacked off in Winter due to a couple of illnesses/injuries and a general lack of motivation.
I've increased the frequency of my runs in the last few weeks and have really struggled, particularly with shin and calf pain. I'm not sure if this is a reaction to increased activity? I would have assumed my shoes were past it but they are not that old. Running is painful and I'm really struggling to get to 5k because of it - feel fine otherwise. It's very frustrating - I went out this morning intending to do a minimum 5k and perhaps push on for 10k, but I was struggling after 1k and eventually gave up at 3k. The pain is odd as it stops more or less as soon as I stop running' so inclined to think it's not related to overdoing it. I'm not totally convinced about my shoes so may get new ones...wondered if anyone had any similar experiences?