With Hyrox welcoming a projected 1.2 million athletes in 2026, more than double last year’s 650,000, a growing share of those entries are coming from the running community.

As athletes, we don’t love being pigeonholed into one sport but instead try new things and the explosion of HYROX showcases just that.

But for every runner who arrives at the start line confident their training will translate, plenty get caught out by the same misconceptions about how their running fitness will hold up.

To help participants separate fact from fiction, we spoke with Matt Bond, former Great Britain distance runner and representative for heritage British running brand Ronhill — founded by 1970 Boston Marathon winner Dr. Ron Hill MBE.

Matt breaks down the five biggest running myths around Hyrox to the test.

MYTH 1: “If you can run a sub-90 half-marathon, you’ll be a strong Hyrox runner.” — FALSE

“A strong half-marathon time tells you how fast you can run when fresh. Hyrox running is done under fatigue, with your heart rate already elevated and your legs already loaded. Plenty of sub-1:30 runners struggle to hold 5:00/km in a Hyrox because they’ve never trained to run compromised. The runners who do well are the ones who’ve practised running tired, not just running fast.”

MYTH 2: “The running portions are where runners gain time on everyone else.” — TRUE

“This one holds up, but with a major caveat. Runners absolutely have an advantage on the 8 x 1km, but most squander it by going out at 5K pace on run one and falling apart by run five. Apply a proven marathon pacing strategy instead: even effort, slight negative split, save the surge for the final runs. The fastest Hyrox athletes in the world don’t run their first kilometer fastest, they run their last.”

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MYTH 3: “You should drop your mileage in the final weeks of Hyrox prep.” — FALSE

“This is the most common mistake I see in runners crossing over. They cut their running drastically in the final block to chase other forms of fitness, and arrive at the start line with their best asset blunted. Your running base is what compounds over months and years — protect it. Keep your long run, keep your tempo session, and build everything else around them.”

MYTH 4: “Speed work is the most useful running session for Hyrox prep.” — FALSE

“Runners assume Hyrox demands sharp, fast running, so they default to track intervals. But the most valuable session for a Hyrox-bound runner is a short, easy run done immediately on tired legs. Twenty minutes after a hard effort teaches your body to hold form and rhythm when fatigued, which is exactly what the back half of a Hyrox demands. Speed work has its place, but it’s not the priority.”

MYTH 5: “If you’re already running fit, you don’t need a structured running plan for Hyrox.” — FALSE

“General running fitness is the floor, not the ceiling. The runners who go from finisher to competitive are the ones who keep their running structured. Think long runs, tempo work, easy mileage — right through their Hyrox build. A proper half-marathon training plan, gives you the framework to keep building your engine while you add everything else on top. Six weeks of structured running on top of a solid base will transform your race.”

The Verdict

Matt’s bottom line, “Runners coming to Hyrox have a huge advantage — they just need to use it properly. As Ron Hill himself proved over 52 years of daily running, the athletes who thrive long-term are the ones who keep showing up for the work that builds the engine.”