When should I change my running shoes?

This is one of the most common questions among runners of all levels. The condition and life within your shoes have a huge impact on your body, and quality of your training sessions.

Below is an exchange between Coach Hiruni and Runcoach Athlete and avid endurance runner Andrei Marinus.

Andrei: I run over 200km (125 miles) per month, and a good pair of shoes (even on sale is easily over 100USD). So here’s the million-dollar question… When do I have to change them again?

Coach Hiruni: Excellent question. Most folks who take running seriously search for an answer to this question. There are general guidelines some shoe manufacturers have (400-600km or 250 – 400 miles) for wear and tear, but not everyone wears shoes the same way.

Andrei: Yes, I noticed very few of them mention a higher mileage. It could be the shoe company tries to sell as much as they can. But I also understand the reasoning - after a certain mileage, the shoe loses its advertised features, and stop protecting the runner.

Coach Hiruni: As a coach I am also reluctant to recommend running high mileage in one shoe, because I have the best interest of my runners at heart. I want you and my other runners to be protected when you leave your door for a run, and continue to stack up days, weeks, months of consistent training. There are aspects on your shoe and within your legs you can use as a guide to know it is time to upgrade your footwear.

Andrei: So it seems, the best judge should be the runner? I should listen to my body. Once I start to receive signs of pain or discomfort or simply just not the same bounce as before, it is a signal.  Though pain is universal, everyone experiences it differently. For me it is usually a bit of tightness in the ligaments around the ankle. I have ignored this in the past, telling myself that some Kenyan runners are doing marathons on bare feet, so if I keep running in worn out shoes, I would still be protected. How I wished I didn’t do that … I ended up at an orthopedist who promptly put me offline for two months. Imagine how I felt going from over 200km to zero … Let’s just say I had learned my lesson, and ever since I am really listening to my body.

Coach Hiruni: Agreed. Some of the best lessons are learned the hard way. Most people can also tell by simply looking at the bottom of the sole of the shoe. The tread (just like a tire) should look fresh. If you notice pieces missing, or the shoe just looks “old and tired” that’s a red flag! For some people this can happen as early as 200km (125-150 miles) into wearing a shoe.

Andrei: Right on that point. Look at the sole of the shoes that I ran in when I got my marathon PB and my first ultra-marathon. They will be always close to my heart, but I know they have to go. There is almost nothing left at the back the shoe, right where I land.

I am running in zero drops, you can imagine with no sole left at the heel, I kind of converted them into negative drops…