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~310 km
Expected lifespan, estimated from its category and specs.
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Ideal for A committed racer chasing a fast half or full marathon who wants a light, rockered carbon shoe for race day and faster workouts, and already owns a separate everyday trainer.
Race-Day shoes in NORMA's database last between 100 and 550 km across 130 models. At 310 km, the On Cloudboom sits in the lower half of that range.
The On Cloudboom is On's first elite carbon-plated marathon racer, built around twin CloudTec cushioning, Helion foam and a carbon-infused Speedboard. It uses an extreme rocker geometry to drive a rolling, propulsive stride and a single-layer engineered mesh upper for low weight and breathability. Positioned squarely as a race-day shoe for going after a marathon PR, it is aimed at fast running rather than daily mileage. Note this assessment leans on an On press release rather than independent testing, so performance claims are the brand's own and judgments are kept conservative.
Full specs, fit notes, and reviews on the On Cloudboom wiki page.
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The On Cloudboom lasts about 310 km, estimated from its category and specs. Your own mileage shifts with body weight, running surface, and how you use the shoe.
Start checking for wear around 186 km (60% of its lifespan). By 248 km the foam and outsole are usually noticeably degraded, and most runners retire the shoe between there and 310 km.
Race-Day shoes in NORMA's database range from 100 to 550 km across 130 models. At 310 km, the On Cloudboom sits in the lower half of that range.
Often, yes. A pair with under 60% wear (roughly 186 km) still has real training life left. NORMA lists second-rotation running shoes with transparent, verified mileage so you know exactly how much life you're buying.
