On Cloudsurfer 3 Review: A Firm-Soft Daily Trainer for Long, Easy Miles

The Cloudsurfer 3 is a real step forward for On, even though it’s most definitely a daily trainer built with max cushioning for easy miles. It doesn’t have the pop of the brand’s bouncier shoes, and I don’t think it’s trying to. What it has in abundance is a steady, firm-soft (not a contradiction) cushion that holds up over long, easy miles, plus a fit that works beautifully for my feet.Right now, it’s only available in-store and at selected retailers, but it releases nationwide February 2027.ProsGreat firm-soft cushioningFantastic fitWide-foot friendlyGood for high instepsKey SpecsBest ForDaily training, road runningWeight10.8 oz (M10) 9.5 oz (W9)Drop8 mmStack Height45 mmThe Nerdy Bit: On’s New Surreal FoamThe headline is Surreal, On’s first supercritical midsole foam, which is EVA-based and sits inside a redesigned CloudTec Phase structure. Supercritical processing infuses the foam with gas under high pressure and temperature, then lets it expand in an autoclave—a machine that uses steam to superheat the environment. That’s the same basic-ish idea behind the “super foams” that have taken over daily trainers, but On had never made it work with its hollow Clouds.Scott Maguire, president and COO of On, explained why in an interview with Runner-in-Chief Jeff Dengate. “We’ve only ever been able to do CloudTec in EVA in the past,” he said. “We’ve never been able to do it in a supercritical processing.”The trouble was scale. “Putting Clouds in that, it becomes super small and it has to become very big,” Maguire said. Predicting where each Cloud will form, how far apart they sit, and how they interact “has been impossible for us to do for years.”Winston ZhouThe CloudTec provides structure and softness on your run.On’s own numbers put Surreal at roughly 15 percent softer, 15 percent lighter, and 23.3 percent more responsive than Helion, the foam that came before Surreal. The redesigned CloudTec Phase geometry is credited with 15.5 percent deeper compression and a 9.9 percent cut in peak braking force. Those figures come from finite element analysis simulations at On Labs Zurich, so they are modeled results, not data from everyday runners; a grain of salt should be well-applied. What I felt in the ride was a foam that’s soft but has a firm backbone, kind of like a good honeycomb-cushion feeling.The RideHere’s where my opinion comes in. The new foam is an improvement, but the return doesn’t have quite the oomph of other shoes in On’s lineup. If you’re hoping for a springy kickoff, look elsewhere.What I love is the character of the cushion. It’s firm-softness—if that’s a thing—which I declare it is. Over long miles, it never felt like it compacted, and it never gave so much that it slowed me down. Since I run more miles than speed, that’s my best case.Dengate, who has been tough on On’s hole-based tech in the past because slabs of modern foam were beating it, came around: The Cloudsurfer 3 “really does feel like a big improvement in comfort and ride for a daily training shoe.” Gear Editor Amanda Furrer, who admits she found past On trainers kind of blah, rated this one near-perfect. As a cushioned trainer, she said she’d have to quote me, saying: “it’s aces.”The FitOn gets fit so right. From its super shoes to its ultra trail runners like the Cloudultra Pro, they’re somehow both forgiving and secure, with a heel-lock eyelet placement that’s my personal favorite bit of the brand. (That, and the Zendaya commercials. I love her.)Winston ZhouFor wide-feet and/or high insteps, these shoes just fit wonderfully.I have high arches and a correspondingly high instep, and this shoe suits both. There was no rubbing and no hot spots, and I never felt the need to loosen my laces at the midfoot. The warp-knit upper is plush through the collar and tongue and secure without clamping or getting that weird bunching pleat thing that I loathe.Furrer saw the same thing from the wide-foot side. For runners with wide feet and high insteps, she says, the “Cloudsurfer is fitted and not tight, but also secure.”Who It’s ForThis is not a speedwork shoe. If you want a rocket for tempo days, keep looking. It’s also on the heavier side, which is the trade-off for all that stack.But as an everyday trainer for long, easy miles, it’s excellent. The foam is better, the fit is better, and the ride stays consistent from the first mile to the last. For high-arched runners especially, I’d put it near the top of the try-on list.Shop Men’s at marathonsports.com | Shop Women’s at marathonsports.comCat Bowen, senior editor of commerce; reviews, is a seasoned runner with more than 20 years of distance running experience, including dozens of marathons, half marathons, and even a few ultra marathons. For over a decade, she has tested parenting, fitness, home, and running gear and written in-depth guides to help readers with their next purchase. Holding multiple advanced degrees and currently studying kinesiology, Cat Bowen brings research-backed insight to all of her guides. Passionate about women’s health and neurodivergent inclusion, she advocates for closing research gaps and helping others—especially AudHD people—find joy in running and fitness.