Here’s a bold statement: You’ve probably been told that wearing the wrong running shoes could get you disqualified from a race. But here’s the truth—for the vast majority of runners, the idea of ‘illegal’ shoes is more hype than reality. Let me break it down for you in a way that’ll make you wonder why this is even a topic of debate.
First, let’s address the elephant in the room. Social media is flooded with runfluencers tossing around the term ‘illegal’ shoes like it’s a secret code. One creator even dedicates an entire video series to testing these so-called ‘illegal’ shoes against ‘legal’ ones. But here’s where it gets controversial: What laws are these shoes actually breaking? The answer lies with World Athletics, the governing body for athletics, which sets guidelines for competitive footwear. For road races, shoes can’t have a sole height exceeding 40mm and can only feature one rigid structure, like a carbon plate.
Now, here’s the part most people miss: These rules primarily apply to elite runners, not your average weekend warrior. And this is the part that’ll surprise you—most of the shoes labeled ‘illegal’ are actually the everyday trainers you or your uncle might wear on a casual jog. Take a look at Strava’s 2025 Year in Sport Report: The top three running shoes logged by users were the Asics Novablast (41.5mm), Nike Pegasus (37mm), and Hoka Clifton (42mm). Notice anything? Only one of these is technically ‘legal’ under World Athletics rules. Yet, these shoes are everywhere, and no one’s getting disqualified.
I’ve run races like the New York Half Marathon in shoes well above the 40mm limit, and I’m not alone. Organizations like New York Road Runners (NYRR) confirm they apply these rules but handle violations on a case-by-case basis. Last year, not a single runner was disqualified for shoe-related infractions. So, why the fuss?
But here’s where it gets controversial: While the ‘illegal’ label is mostly social media drama, it’s still smart to consider the practical implications of wearing high-stack shoes. Dr. Mark Mendeszoon, a podiatrist, warns that these shoes can alter your running gait and require an adjustment period. ‘It’s like getting braces,’ he says. ‘You have to learn slowly.’ So, while you’re unlikely to be disqualified, you might want to ease into those towering trainers.
Now, let’s spark some debate: Are these rules fair, or do they unnecessarily complicate the sport? Should everyday runners even care about regulations meant for elites? Share your thoughts in the comments—I’d love to hear if you’ve ever felt pressured by the ‘illegal’ shoe narrative.
And if you’re ready to take your running to the next level, why not try our marathon plans? For a limited time, unlock 14 days of free access to our complete training library on the Runner’s World UK app. UNLOCK ACCESS HERE.
