Summary

The article discusses the importance of replacing running shoes after a certain mileage, considering factors such as wear, pain, running terrain, body weight, and mechanics.

Abstract

The author reflects on the necessity of replacing running shoes, particularly their beloved Merrell trail runners, after approximately 500 miles of use. Despite the durability of Vibram soles, the author notes signs of wear and the onset of foot and knee pain, which are indicators that the shoes may no longer provide adequate support. The article emphasizes that while the 200 to 500-mile rule for shoe replacement might seem like a sales tactic, it is grounded in the need to prevent injury and maintain comfort. The author draws parallels to their experience with work boots, where upgrading to a higher-quality pair alleviated chronic pain. Factors such as running surface, body weight, and individual gait can also influence how quickly running shoes deteriorate. After calculating the mileage and assessing personal comfort, the author concludes that it is indeed time to retire their current pair of running shoes.

Opinions

The author is skeptical yet open-minded about the 200 to 500-mile rule for replacing running shoes, acknowledging its basis in injury prevention rather than mere sales propaganda.
There is a personal attachment to favorite shoes, as evidenced by the author's reluctance to part with their Merrell trail runners despite signs of wear.
The author believes in the value of investing in higher-quality footwear, as demonstrated by their positive experience with more expensive work boots.
The article suggests that each runner must pay attention to their body's signals and the actual condition of their shoes, rather than solely relying on mileage estimates.
The author plans to seek expert advice on gait analysis to further understand their running mechanics and its impact on shoe wear.
The author accepts that their current running shoes have reached the end of their useful life based on comfort levels and the onset of knee pain.

Do I Really Need New Running Shoes After 500 Miles?

It might be good advice, not just shoe sales propaganda

I love my Merrell trail runners. They fit great and my feet never seem to get sore. They have a Vibram sole, which is supposed to last a long time. But I can feel them wearing out. How far have these shoes taken me? I did the math down below, and I was surprised exactly how many miles a newbie runner and trail hiker put on these shoes in just a year!

When you hear that shoes only last 200 to 500 miles, at first it sounds silly. Is it true? Do they lose their cushioning and need replacing so fast? And can you still deal with the smell? It’s up to each runner to make the call.

I’ve seen dudes out running in shoes that look like they went through World War Three, with holes in the sides and no tread left. Now that’s extreme.

If you’re like me, you get your favorites and then don’t want to wear anything else. I tend to wear my shirts until they have holes, and I want to do the same thing with shoes. I have to pay attention to the actual state of my footwear, not just my feelings about it.

Are You Feeling Pain?

If pains are starting in your feet, shins, knees or hips during or after running, it might be a sign that your shoes are giving you grief. The experts say that this is one of the first things to look into to prevent injury. I’m inclined to agree with the experts, but not because they are so “expert.” It’s because of my long relationship with leather work boots.

I know, boots have nothing to do with running. Or do they?

I spent years on my feet all day at construction sites. When I was broke and young and dumb, I would buy the cheapest steel toed boots I could find and wear them until they were falling off my feet. At up to $200 a pair, those things were expensive! At the same time, my hips and knees were always sore. I never connected it to my footwear.

Eventually I got more money and activated more brain cells. I bought a better pair of boots. Surprise! The pain went away. It felt great!

Six months later, my hips started hurting again, then my knees. Same job, same hours. Let’s do the math: 60 hours per week, and 26 weeks, is 1560 hours on my feet. If walking speed would be at least 2 miles per hour, I was putting the equivalent of 3000 miles on those boots. And they are built a lot tougher than a spongy, soft running shoe. No wonder they get worn out!

Running Terrain Makes a Big Difference to Shoe Lifespan

Do you do all of your running on a treadmill, or on pavement? Then you will probably get entirely different lifespans from your footwear than I do.

I run (and hike) almost all my miles on loose gravel, sand and dirt. I can’t wear runners with soft soles because tiny rocks get embedded right in the rubber, which is really annoying and ruins the sole faster. Nothing is as fun as stopping frequently to fix a shoe by prying a pebble out of the bottom. Since I switched to trail runners, I’ve noticed a lot less problems, and they don’t seem to wear out nearly as fast.

Your Body Weight and Your Body Mechanics

No shaming here, but everyone is different. I’m short and light, so each stride puts a little less force on my shoes than if I weighed 25 pounds more. My weight is a function of my height. If I was six foot two, I would be wearing out my shoes faster. The same thing goes for your body mechanics. One person is going to be more or less efficient than another, and step differently.

This is another area where expert advice could help. I plan on getting my gait examined by a gait-ologist this summer, once we aren’t all locked down. In the meantime, I’m paying attention to my form as much as I can.

How Much Do You Run?

A guy like me who is just a part timer will go through less shoes than an ultra-marathoner, no doubt. But as I increase my weekly mileage, I’m going to have to pay attention to my body and be ready to make adjustments.

My favorite Merrells have been with me for just over a year, and I used them for some hiking as well as running. Average mileage is 20 miles per week, for 54 weeks. That’s 1080 miles, give or take. It’s about three quarters walking, so the running mileage on these shoes is around 300 miles.

I’m going to go with my gut on this one. They feel worn out. I noticed in the last few runs that my left knee is a little sore, and they just don’t feel comfy. Time to say goodbye to my old friends and get a new pair.