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On Cloudmonster 1 - Glacier | Alloy primary angle

On | Standards

Every Cloudmonster is engineered to On's highest standards - tested by athletes, certified for performance, and built to exceed your training goals.

Product details and quick facts

Cushioning

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Mid

Road running

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Responsive

Lacing

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Standard

Heel to toe drop

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6mm

Key features

On Cloudmonster 1 - Glacier | Alloy CloudTec® Pods That Actually Rebound

CloudTec® Pods That Actually Rebound

Each CloudTec® cushioning pod compresses on impact and springs back, giving you a softer landing and a more energetic toe-off than traditional foam alone.

On Cloudmonster 1 - Glacier | Alloy Speedboard® for Forward Momentum

Speedboard® for Forward Momentum

The integrated Speedboard® plate guides your foot through each stride, adding propulsion so the shoe works with your natural gait rather than slowing it down.

On Cloudmonster 1 - Glacier | Alloy Clean Aesthetic, All-Day Build

Clean Aesthetic, All-Day Build

Hidden eyelets and a refined Glacier | Alloy palette give the Cloudmonster 1 a polished look, while Helion foam and a rubber outsole keep it ready for real-world wear from the first step.

Product story

Built for Every Mile of Your Day

The Cloudmonster 1 in Glacier | Alloy was designed for the kind of runner who logs miles in the morning and then keeps going. The cool glacier tones and brushed alloy finish give the shoe a composed, versatile look that holds its own on the road and off it. Hidden eyelets keep the profile clean, so nothing disrupts the streamlined silhouette.

Under the foot, the CloudTec® cushioning system does what On engineering is known for: each hollow pod compresses independently on landing, then rebounds to push you forward. The Speedboard® works with that motion, adding propulsion so the shoe doesn't just absorb energy, it returns it. Helion foam in the midsole stays light underfoot while holding its shape through long days and high mileage.

This is a shoe for everyday wear, not just race day. Wear it for a 10K before work, a grocery run at noon, or a long walk through the city on the weekend. The rubber outsole delivers reliable grip across surfaces, and the ride is forgiving enough for runners who are on their feet for hours at a stretch.

The Cloudmonster 1 suits runners who want maximum-cushion comfort without a shoe that looks like a statement piece. The Glacier | Alloy colorway in particular appeals to people who prefer a cool, understated palette. Whether you are building a base, recovering between hard efforts, or simply looking for a go-everywhere shoe that can keep up, this is a strong answer.

Series

Cloudmonster 1

Fit note

True to size

Product FAQ

Details before you decide.

Everything you need to know before you run in the Cloudmonster 1 Glacier | Alloy.

Runner notes

Why this pair keeps getting picked.

Natural feedback shaped around the fit, colorway, and ride profile of this exact product.

My go-to shoe for easy miles

I picked up the Glacier | Alloy colorway because I wanted something that looked clean enough to wear off the road too. Three months in, these are the shoes I reach for most mornings. The CloudTec cushioning takes the edge off pavement on my 6-mile loops, and the rebound feels genuinely springy rather than just soft.

Marcus Delgado

Daily runner, Austin TX

12 hours on my feet and still comfortable

I started wearing the Cloudmonster 1 for my hospital shifts after a colleague recommended them. The cushioning holds up across a full 12-hour day in a way that my previous shoes never did. The Glacier colorway is subtle enough that it pairs with scrubs without looking out of place.

Jennifer Kowalski

Nurse, Chicago IL

Perfect for recovery runs

I use these on my easy days between harder sessions. The CloudTec pods give a soft, forgiving ride that lets my legs recover without completely shutting down the feedback I want from a shoe. The Speedboard keeps the stride from feeling sloppy even when I am running slowly.

Derek Hutchinson

Marathon trainee, Portland OR

Came back from a stress fracture in these

My podiatrist cleared me to run again and recommended a maximum-cushion shoe to ease back in. The Cloudmonster 1 was exactly what I needed. The ride is forgiving without being unstable, and I have built back to 25 miles a week without any discomfort. The Glacier | Alloy is also just a really good-looking shoe.

Tamara Wells

Returning from injury, Nashville TN

Finally a cushioned shoe that doesn't bottom out

At 240 pounds, I have gone through a lot of shoes that promise cushioning and then compress flat within a few weeks. The Helion foam in the Cloudmonster 1 has stayed resilient through four months of regular use. The shoe handles my weight without feeling sluggish, and the outsole grip has been solid in light rain.

Raymond Okonkwo

Heavier runner, Atlanta GA

Versatile enough for everything I do

I needed one shoe that could handle a gym session, a walk to the office, and a post-work jog. The Cloudmonster 1 checks all three boxes. The hidden eyelets give it a cleaner look than most running shoes, and the Glacier | Alloy palette goes with more outfits than I expected. Docking one star only because the toe box runs slightly narrow for my wider foot.

Priya Sundaram

Gym and commute, San Francisco CA

Surprised by how much I use these on road days

I train mostly on trails but needed a dedicated road shoe for my base-building weeks. The Cloudmonster 1 converted me. The cushioning is exactly what tired legs need after back-to-back mileage days, and the shoe is light enough that it never feels like a burden. The Alloy grey trim looks sharp too.

Carlos Menendez

50K ultra runner, Denver CO

Great everyday shoe with a subtle color palette

I am not a competitive runner, just someone who runs a few times a week and wants a reliable comfortable shoe. The Cloudmonster 1 delivers that without requiring me to think too hard about it. The Glacier | Alloy colorway is understated in the best way, and the cushioning makes my 5K routes genuinely enjoyable rather than something I have to push through.

Allison Bergstrom

Casual runner, Minneapolis MN