My single pair of running shoes were past their best at 1,000 km. Well past their best. So this month I kitted myself out with new runners, 2 different pairs. Breaking them in, however, is not that easy. My muscles are protesting as loudly as they did in the first weeks of c25k. My shins are sore, I'm stiff and only now, about 2 weeks into the process are things easing up. I don't remember having these problems a year ago when I first ran with the old pair. But I'm consoling myself with the fact that I'm running further than I was then and using 2 completely different types of shoes (minimalistic and "normal"). One thing is clear though, I'll stagger the process in future and kit myself out with shoes before the old ones give up the ghost.
You never know I might end up with 4 pairs like Oldfloss ππ