Is the On Cloudboom Strike 2 worth it for race day?
Quick Answer: On Cloudboom Strike 2 Review: The On Cloudboom Strike 2 is On’s carbon-plated road racer for race days up to the marathon. It pairs a lighter Helion HF foam with a stiffer, curved carbon plate and a new CloudTec Sphere sole, where channels split the midsole into three pieces to absorb landings and spring back. It is very light for a marathon shoe, and it launched for less than the original. The trade-offs are a stiff, race-focused ride that is wasted on easy runs and errands, and a price that only makes sense if you race.
The On Cloudboom Strike 2 is the top of On’s road racing line, the shoe the Swiss brand builds for race day rather than daily miles. It sits above On’s cushioned trainers, such as the Cloudmonster and Cloudsurfer, and above its lower-priced plated racer, the Cloudboom Volt. On says it was co-created with elite athletes and built for competitions up to marathon distance.
It launched on July 30, 2026, alongside a LightSpray version with a laceless, sprayed-on upper. Both share the same sole. The standard laced model is the one most runners will buy, and it is the focus of this review.
It suits a runner who already trains consistently and wants a dedicated shoe for goal races, from a fast 10K to a full marathon. If you are looking for one shoe to run, walk and do everything in, this is not it.
On Cloudboom Strike 2 in white, side view. Image: Amazon.
Specs
Here are the specifications for the On Cloudboom Strike 2:
| Type | Carbon-plated road racing shoe |
| Best for | Race days and key workouts, up to marathon distance |
| Midsole | Dual-density Helion HF foam, which On says is 15% lighter than before |
| Cushioning geometry | CloudTec Sphere: channels that split the midsole into three pieces |
| Plate | Curved carbon Speedboard, lighter and stiffer than before, per On |
| Heel-to-toe drop | 5 mm |
| Weight | 191 g (6.7 oz), per On |
| Sizes | EU 36 to 49 |
| LightSpray version | Same sole with a laceless, sprayed-on upper: 158 g (5.5 oz) |
| Price | Launched at $250 in July 2026; the LightSpray version launched at $310. Check latest price |
Pros
- It is very light for a marathon-ready shoe, which helps you hold pace late in a race.
- The stiffer carbon plate and springy foam are built for an efficient, quick push-off.
- CloudTec Sphere channels are designed to soften landings and add rebound.
- It launched at a lower price than the original Cloudboom Strike.
- A LightSpray option gives you a laceless, even lighter version with the same sole.
Cons
- The stiff, plated ride is overkill for easy runs and everyday use.
- It is not a walking shoe, and wearing it for errands wastes expensive race foam.
- Racing foam wears out faster than everyday trainer foam, so save it for races.
- The low 5 mm drop asks more of your calves than a typical trainer.
- It is a big spend for a shoe you will wear only a few times a month.
What changed from the original Cloudboom Strike
Almost everything under your foot is new. The headline change is CloudTec Sphere, a new version of the hollow, channeled sole design On has used for years. Here, channels run through the midfoot and forefoot and split the Helion HF midsole into three separate pieces. On says the engineered channels are there to maximize impact absorption and rebound, so you keep more spring in your legs late in a race.
The foam and plate were updated too. Helion HF is On’s racing foam, and On says the new version is 15% lighter than the one in the previous Cloudboom Strike. It is dual-density, meaning two layers of slightly different firmness: a combination designed to give you both stability and bounce. Sandwiched between those layers is a curved carbon Speedboard, On’s name for its carbon-fiber plate, which On says is lighter and stiffer than before. A stiffer plate keeps the shoe from bending much at the toes, which helps the shoe roll you forward efficiently at race pace.
The result is a very light shoe. On lists the Cloudboom Strike 2 at 191 g, or about 6.7 oz, and the LightSpray version at just 158 g, about 5.5 oz. For a shoe meant to carry you through a marathon, that is genuinely light.
The price moved in the right direction as well. The original Cloudboom Strike cost $280, while the Strike 2 launched at $250. The LightSpray version dropped from $330 to $310. New versions of flagship racing shoes rarely get cheaper, so that is a welcome change.
Who should buy the On Cloudboom Strike 2
Buy it if you have a goal race on the calendar and you train consistently. Carbon-plated racers like this are built to help trained runners hold a fast pace with less effort, and the payoff is biggest over longer races such as the half marathon and marathon, where fatigue builds and a light, springy shoe helps you stay smooth.
It suits runners who like a lighter, lower-drop racer. At 191 g, it is very light for a marathon-capable shoe, and the 5 mm drop keeps your heel only slightly above your toes, which many runners find natural at faster paces.
It is also a strong pick for On fans who want the brand’s best race-day technology at a lower price than before. If you already train in On shoes and like how they feel, the Strike 2 is the natural step up for race day.
Finally, consider the LightSpray version if you want the lightest possible setup and like a laceless, sock-like fit. It shares the same sole, so the choice comes down to the upper and the extra cost.
Who should probably skip the On Cloudboom Strike 2
Skip it if you are newer to running or mainly run easy miles for fitness. A stiff carbon racer is not built for slow, relaxed running, and its foam is designed for speed rather than long-term durability. A cushioned daily trainer will serve you better and last longer. Skip it, too, if you want one shoe for running, walking and everyday wear, because a plated racer is excellent at racing and poor at everything else.
If that sounds like you, these suit you better:
- On Cloudmonster 3: On’s cushioned everyday trainer with a rolling ride for daily runs and long walks (check price | read review)
- Asics Superblast 3: a fast-feeling trainer without a plate, versatile enough for daily miles and quicker sessions (check price | read review)
- Hoka Clifton 11: a soft, comfortable everyday shoe for runners and walkers who want simple, dependable cushioning (check price | read review)
Not sure which kind of running shoe you need? Our Free Shoe Finder builds a personalized shortlist in a couple of minutes.
Fit: race-day secure, so try it before race day
On has not published detailed fit guidance for the Cloudboom Strike 2, so start with your usual On size. Racing shoes are built to hold the foot securely, and you should expect a close, locked-in feel through the midfoot and heel rather than a roomy, relaxed one.
Try the shoe on with the socks you plan to race in, and do at least a couple of faster runs in it before race day. That is the best way to check that nothing rubs over longer distances, because small hot spots in the first few miles can become blisters by the end of a marathon.
The laced and LightSpray versions fit differently because of their uppers. The laced version lets you adjust tension across the top of your foot. The LightSpray upper is a seamless, sprayed-on shell with no laces, so the fit is set by the shape of the shoe. If you are unsure, the laced model is the safer choice.
If you have wide feet, try the shoe in person or buy from a retailer with easy returns. Racing shoes generally come in a single standard width, and sizing up to get width usually just adds length and lets your heel slip.
On Cloudboom Strike 2 alternate angle showing the upper and midsole. Image: Amazon.
How it rides: light, stiff and built for race pace
The Cloudboom Strike 2 is designed to feel its best when you are running fast. The stiff, curved carbon plate keeps the forefoot from bending, and the curve helps the shoe roll you from landing to push-off. Combined with the springy Helion HF foam, that setup is meant to return energy and keep your stride efficient at race pace.
CloudTec Sphere changes how the sole handles each landing. Instead of one solid slab of foam, the channels let separate sections of the midsole compress and rebound. On’s goal is better impact absorption and rebound, so your legs feel fresher in the late miles. In practice, expect a firm-but-springy racing feel rather than a soft, plush one.
At slower paces, the strengths of a shoe like this fade. Stiff plates and low drops reward a quick, forward-leaning stride, and at easy jogging speed they can feel awkward and unforgiving. That is why a racer like this is best kept for races and a few key workouts, with easy miles done in a cushioned trainer.
This is a neutral shoe with no features meant to change how your foot rolls. The low 5 mm drop means your heel sits only slightly above your forefoot, which puts a little more work on your calves and Achilles than a typical 8 to 10 mm trainer. If you are not used to low-drop shoes, build up gradually. If you have recurring calf, Achilles or foot pain, a physical therapist or podiatrist can help you decide whether a racer like this suits you.
Grip, durability and what a super shoe costs per race
The Strike 2 is a road racer, built for asphalt and track rather than trails or gravel. Like any shoe with open channels in the sole, it can pick up small stones on dusty paths, so stick to clean roads where it belongs.
Durability is the trade-off with every super shoe. Light racing foams are tuned for bounce, not longevity, and they lose some of their spring with mileage faster than everyday trainer foam. The practical approach is to save the Strike 2 for races and the workouts that matter, and do your training in something built to last. That way, the foam you paid for is still fresh when you need it.
On Cloudboom Strike 2 detail view of the shoe and sole area. Image: Amazon.
Is the On Cloudboom Strike 2 good for walking?
No. Walking relies on the front of the shoe bending as you roll off your toes, and a stiff carbon plate is designed specifically to stop that bending. At walking speed, the shoe will feel stiff and unnatural, and the low drop puts extra strain on the calves over a long day.
There is a cost issue too. Every mile you walk in it uses up race foam you paid a premium for. If you want On’s feel for walking and standing, a cushioned On trainer is built for that job and costs much less; see our guide to the best On Cloud shoes for walking. For walking shoes from any brand, start with our best walking shoes guide.
Cloudboom Strike 2 vs. the original Cloudboom Strike
Here is how the two compare:
Cloudboom Strike 2 | Cloudboom Strike (original) | |
Sole design | CloudTec Sphere, channels split the midsole into three pieces | Earlier CloudTec design |
Foam | New Helion HF, 15% lighter per On | Previous Helion HF |
Plate | Curved carbon Speedboard, lighter and stiffer per On | Earlier Speedboard |
Launch price | $250 | $280 |
Buy the Strike 2 if you are choosing between them at full price: On says it is lighter, with a stiffer plate and a new sole design, and it costs less. The original only makes sense if you already race in it happily and want a backup pair.
On Cloudboom Strike 2 Alternatives
If you want a race-day shoe but the Strike 2 is not quite right, these are the trade-offs worth weighing.
- On Cloudboom Volt: On’s lower-priced plated racer, a good fit if you like the On feel but want to spend less (check price | read review)
- Nike Alphafly 3: Nike’s long-distance super shoe built around forefoot Air Zoom units, for runners who want a different, bouncier race-day feel (check price | read review)
- Asics Metaspeed Sky Tokyo: Asics’s racer for runners who speed up by lengthening their stride rather than quickening it (check price | read review)
- Adidas Adizero Adios Pro 5: Adidas’s marathon racer, worth comparing if you want to feel how a different brand approaches plate and foam (check price | read review)
Your budget and how a racer feels on your foot should decide this, so try more than one if you can. For a wider view, see our best racing shoes roundup.
Price and value
The Cloudboom Strike 2 launched at $250 in July 2026, down from $280 for the original, and the LightSpray version launched at $310. For a flagship carbon racer, a price cut at launch is a genuine plus.
Value depends on how you use it. As race-day equipment for a runner with a few goal races a year, it is fairly priced for what you get: a very light shoe, a new plate and foam and On’s latest sole design. As an everyday shoe, it is poor value, because racing foam wears faster and the stiff ride is wasted on easy miles. Buy it for race day and pair it with a durable trainer for everything else.
Final verdict
Best for: trained runners racing anything from a fast 10K to a marathon who want a very light, carbon-plated shoe from On.
Avoid if: you are newer to running, you want one shoe for everything or you plan to walk in it.
Fit: secure and race-focused; start with your usual On size and test it on faster runs before race day.
Verdict: The On Cloudboom Strike 2 is a thoroughly updated racer: lighter Helion HF foam, a stiffer curved carbon plate and a new CloudTec Sphere sole, all at a lower launch price than the original. It is a specialist tool, and its stiff, race-focused ride makes sense only at speed. If you have goal races and train consistently, it deserves a place on your shortlist.
Check the latest price on the On Cloudboom Strike 2.
Frequently Asked Questions for On Cloudboom Strike 2
It is On’s new sole design for this shoe. Channels run through the midfoot and forefoot and split the Helion HF midsole into three pieces. On says the engineered channels maximize impact absorption and rebound, so your legs feel fresher late in a race.
They share the same sole. The LightSpray version swaps the laced upper for a seamless, laceless upper that is sprayed on, which drops the weight from 191 g to 158 g per On and raises the launch price from $250 to $310.
Usually not. Carbon-plated racers are designed for trained runners at race pace, and their foam is built for speed rather than durability. Newer runners will get more comfort and value from a cushioned daily trainer.
You can use it for key workouts such as race-pace sessions, but it is best saved for races. Racing foam loses its spring faster than trainer foam, so doing easy miles in it shortens its useful life.
On redesigned the sole with CloudTec Sphere, switched to a Helion HF foam it says is 15% lighter and added a lighter, stiffer curved carbon plate. It also launched at $250, down from $280 for the original.
On has not published specific sizing advice, so start with your usual On size. Racing shoes fit snugly by design, so try it with your race socks and do a few faster runs in it before your goal race.
