On Running Lineup Guide: Cloudsurfer 2, Cloudsurfer Max and Cloudboom Max Compared

Introduction

On has been quietly rebuilding its running line into clear families, and three shoes in particular now cover very different needs. The Cloudsurfer 2 is the everyday mileage shoe, the Cloudsurfer Max is the brand’s only true max-cushion trainer, and the Cloudboom Max takes the Cloudboom race concept and tunes it for the much larger group of runners finishing marathons in four hours or more. Here is what separates them, and who each shoe is actually for.

Everyday Miles: On Cloudsurfer 2

The original Cloudsurfer was a success for On, so the brief for version 2 was simple: keep what worked and elevate everything else. The team refined the materials, improved the grip, and worked stability into the midsole through geometry rather than plates or firm posts. The CloudTec cushioning carries over, fine-tuned through simulation, helping the transition from landing to push-off.

Stability is the headline change. Instead of just being soft and comfortable, the midsole geometry adds small structural details that make the shoe noticeably more planted. The upper received equal attention, with material and foam choices designed to hug the foot and keep long runs comfortable.

Key specs: $160 price point, a 9 mm drop (32 mm heel, 23 mm forefoot), with availability starting February 25th. We found it a genuinely nice daily trainer, the kind of shoe you can pile miles on without thinking about it.

Max Cushion Done Properly: On Cloudsurfer Max

The Cloudsurfer Max is the evolution of the Cloud Eclipse, and it is the only real max-cushion shoe in On’s range. The changes start at the bottom: the exposed nylon-style speedboard from the Eclipse caused some runners issues, heating up and clicking over stones, so it was removed entirely. Stability was then rebuilt through geometry, and in testing the Cloudsurfer Max actually came out more stable than the Eclipse.

The Helion foam is softer than the Eclipse’s, though slightly firmer than the standard Cloudsurfer, striking a balance between plushness and control. The defining feature is what On calls a cradle construction: your foot sits inside the midsole rather than on top of it, which makes the shoe feel both more stable and more cozy. Add refined upper materials, a gusseted tongue and careful haptics, and this is a shoe designed to feel extremely comfortable for long stretches.

Specs: $180, a 37 mm heel and 31 mm forefoot for a 6 mm drop, available July 17th, 2025. If you want genuine max cushion from On, this is currently the one.

Built for the Back Half: On Cloudboom Max

The Cloudboom Max started with a blunt observation: the average marathon finish time is around 4 hours 26 minutes, and most super shoes simply do not work for that population. On studied four to five hour marathoners closely, including slow-motion video, and found the race shoes were hurting them rather than helping. The result is a super shoe platform tuned for the everyday runner.

The foam is the same ingredient family as the Cloudboom Strike, tuned differently: it helps you run fast, and testers reported recovering faster on long efforts. The carbon plate was swapped for a glass fiber speedboard with a less radical shape, because a stiff carbon plate puts you in a very specific push-off position that works for two to three hour running but falls apart over four hours. The heel also sinks into the foam, sitting you inside the midsole for natural stability.

Specs: 296 g, a 40 mm heel and 30 mm forefoot for a 10 mm drop, available August 21st, 2025. On positions it clearly: if your marathon will take four hours or more, this is the shoe for the ultimate experience. Notably, many athletes are training in the Cloudboom Max and saving the Strike or Echo 3 for race day.

Which One Should You Buy?

If you want one dependable shoe for daily training, the Cloudsurfer 2 is the straightforward pick: comfortable, now more stable, and the most affordable of the three. If your priority is protection on long, slow miles and you want the softest ride On makes, the Cloudsurfer Max is the clear answer, and it is currently the only true max-cushion option in the range. If you are targeting a marathon and expect to be out there four hours or longer, the Cloudboom Max is purpose-built for exactly that scenario, trading the radical carbon geometry of a pure race shoe for comfort and stability over the full distance.

The three shoes complement each other nicely, and some runners will realistically want two: a Cloudsurfer Max for heavy training weeks and a Cloudboom Max for the marathon itself, or a Cloudsurfer 2 as the all-rounder with one of the others as a specialty tool.

Conclusion

On’s lineup now speaks to distinct runners instead of one broad ideal. The Cloudsurfer 2 refines a proven daily trainer, the Cloudsurfer Max finally gives the brand a dedicated max-cushion shoe, and the Cloudboom Max acknowledges how most marathons are actually run. Match the shoe to your mileage, your race goals and your finishing time, and each of them makes a lot of sense.