Signs you need new running shoes:

Think your running shoes are fine? Check this list to see if it’s time to upgrade.

You are getting niggles in the knees and ankles. This could be a result of the wrong support in your shoes.
You have been running for a few months. Your gait will change in the first three or four months as you strengthen your muscles and get used to the pattern of running.
You have crease marks in the midsole of the trainer. This means the sole is not recovering from compression, which will impact your running.
You’ve clocked up miles. The midsole loses its cushioning every time you wear them, so your trainers at 200 miles will be less supportive than at 100 miles.

Steve urges anyone who is totally unsure of where to start with their running shoes to call Runners Need customer services, where the staff are available to take questions and queries over the phone.

Running: how to buy running trainers online, according to an expert