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On Cloudmonster 61 - Ivory | Midnight 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 61 - Ivory | Midnight Helion Superfoam Absorbs Every Landing

Helion Superfoam Absorbs Every Landing

Helion superfoam is lightweight, durable, and temperature resistant, so it performs consistently whether you are running in summer heat or a cool autumn morning. It converts impact energy into rebound rather than letting it dissipate as heat or fatigue.

On Cloudmonster 61 - Ivory | Midnight Speedboard Drives Propulsive Energy Return

Speedboard Drives Propulsive Energy Return

The Speedboard is an internal propulsion plate that stores energy during the landing phase and releases it at toe-off, giving the Cloudmonster 61 a noticeably snappy feel underfoot. Paired with the rocker shape, it produces a forward-rolling stride that reduces the effort required to maintain pace.

On Cloudmonster 61 - Ivory | Midnight Soft Upper Built for All-Day Comfort

Soft Upper Built for All-Day Comfort

The engineered upper and padded sockliner wrap the foot without restriction, making the Cloudmonster 61 as comfortable on a recovery jog as it is during a two-hour effort. The fit is accommodating enough for runners who spend long periods on their feet outside of training as well.

Product story

Built for the Long Run, Dressed for the Rest of It

The Cloudmonster 61 in Ivory and Midnight is the kind of colorway that earns a second look on the road and at the coffee shop after. The pale ivory upper sits cleanly against the deep midnight sole, giving the shoe a two-tone confidence that works whether you are logging miles before sunrise or walking into a meeting still in your kit. It is a considered pairing, not an accident.

Under that refined exterior lives the same monster-level cushioning the Cloudmonster line is known for. Helion superfoam absorbs landing impact across the full stride, converting force into forward momentum rather than fatigue. The Speedboard positioned through the midsole acts like a loaded spring, adding a snappy, propulsive feel that keeps the ride energized through the final miles of a long run.

The rocker geometry built into the Cloudmonster 61 is what separates it from a shoe that simply feels soft. The curved sole geometry guides the foot through a natural toe-off, so each stride flows forward rather than stalling at the push. Combine that with the soft knit upper and padded sockliner and you have a shoe engineered to reduce the work your legs do over distance, not just to protect them.

The Cloudmonster 61 Ivory and Midnight suits runners who want maximum cushion without a maximalist aesthetic. It is a strong choice for daily training at easy to moderate paces, long weekend runs on asphalt or packed paths, and recovery days when your feet need a break but your schedule does not allow one. If you tend to favor shoes that transition cleanly from run to the rest of your day, this colorway delivers exactly that.

Series

Cloudmonster 61

Fit note

True to size

Product FAQ

Details before you decide.

Everything you need to know before you run in the Cloudmonster 61 Ivory and Midnight.

Runner notes

Why this pair keeps getting picked.

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

The cushion I needed for 18-mile long runs

I have been running on the Cloudmonster 61 in Ivory and Midnight for about eight weeks now and they have become my go-to for anything over 14 miles. The Helion foam genuinely holds up through the back half of long runs when my legs are already asking questions. The Speedboard gives just enough snap to keep the turnover honest without feeling like I am fighting the shoe.

Marcus Delgado

Marathon trainer, Portland OR

Finally a max-cushion shoe that doesn't feel spongy

I tried a couple of other max-cushion options before landing on the Cloudmonster 61 and they felt like running on wet sand. These actually feel responsive. The rocker geometry is the real story here, my stride feels efficient even on easy days. The Ivory and Midnight colorway is sharp too, subtle enough that I wear them off the run without thinking twice.

Trevor Okafor

Daily runner, Chicago IL

Twelve-hour shifts and these feet still feel fine

I started wearing the Cloudmonster 61 for my runs and ended up putting them on for a long hospital shift out of curiosity. By hour ten I was still comfortable, which does not happen with most of my running shoes. The soft sockliner makes a real difference when you are standing on hard floors for hours. I ordered a second pair before my first one is even close to worn out.

Sandra Whitfield

Registered nurse, Dallas TX

Supportive without making me feel like I need a motion control shoe

At 230 pounds I have burned through the cushioning on lighter trainers in six weeks. The Cloudmonster 61 has held up well past that point and the midsole still feels lively. The rocker shape helps my gait feel natural rather than forced, which is something I don't usually get from max-cushion options. Very glad I made the investment.

James Kowalski

Heavier runner, Pittsburgh PA

Made my comeback miles much more forgiving

My physio recommended a max-cushion shoe with a rocker geometry while I was rebuilding mileage after an IT band flare-up, and the Cloudmonster 61 fit that description perfectly. The transition from heel to toe is smooth and forgiving in a way that kept my knee and hip happy through the early weeks. I knocked off one star only because I wish the heel counter were a little more snug for my narrow heel, but the ride itself is excellent.

Priya Nambiar

Returning from IT band injury, Seattle WA

Versatile enough that I stopped keeping a separate commute shoe

I do a two-mile run to the train, lift at lunch, and run back in the evenings. I used to pack a lighter shoe for the gym but the Cloudmonster 61 handles all of it without complaint. The Ivory and Midnight colorway looks clean enough that colleagues who see me walking in think I just like nice shoes, not that I ran to work. The Speedboard keeps them feeling energetic even on tired legs.

DeShawn Harrington

Gym and commute runner, Atlanta GA

My long run shoe for the last two training blocks

I have used the Cloudmonster 61 through two half marathon training cycles and they have been consistent every weekend. The foam does not feel noticeably more compressed by the end of a build than it did at the start, which tells me the Helion construction is holding its shape. The shoe also cleans up beautifully after muddy shoulder-season runs, which matters when you are rotating only two pairs.

Carolyn Beaulieu

Half marathon runner, Boston MA

My joints thank me every morning after a long run day

Recovery used to take me two full days after anything over 15 miles. Since switching to the Cloudmonster 61 that has shortened noticeably. I credit the combination of Helion foam and the rocker geometry for taking stress off my knees at landing. The Ivory and Midnight colorway is my favorite On shoe on looks alone, and the fact that it performs this well makes the whole package hard to argue with.

Ray Fontaine

Masters runner age 58, Denver CO