I started running the local 5k park run this year and my times came down seemingly effortlessly from 23 min to 21 min.
Time for the push to get into the 20's then minor injury after minor injury. I have not been able to run without pain for about 4 months now. I've totally rested for about 3 weeks but when i return to running so do the injuries. I currently have a slight hamstring pull, a groin strain, shin splints and calf and shin muscle pain. I am running only a painful 5 miles a week(sometimes nil) plus the parkrun because of the injuries. My running shoes are the standard nike, reebok bought on price but they are comfortable. Do running shoes make a difference in preventing injury or is it a marketing ploy. I've read that a lot of the advice about running shoes come from manufacturers who want you to buy expensive and often.