Cloudboom Strike 2 — Explosive Speed for Marathon Race Day
The Cloudboom Strike 2 is On Running’s pinnacle carbon-plated racing shoe. It combines an evolved Helion™ HF midsole with a curved carbon Speedboard for maximum propulsion. Whether you’re racing a marathon or pushing through a tempo session, it’s built to deliver every possible edge.
What Makes the Cloudboom Strike 2 Different
The standout update is CloudTec Sphere, a new segmented midsole geometry with strategic channels. This lets three sections of foam compress and rebound independently, rather than acting as one solid slab. The curved carbon Speedboard is lighter and stiffer than the previous generation, channeling energy forward through the gait cycle. A new Lenoweave upper construction locks threads in place for breathability and secure lockdown without adding weight.
- Evolved dual-layer Helion™ HF midsole, 15% lighter and 6% more resilient
- CloudTec Sphere segmented geometry for independent midsole compression
- Full carbon fiber Speedboard for explosive forward propulsion
- Lenoweave upper for breathability, strength, and a snug fit
- Thick, full-coverage rubber outsole for wet-weather grip
- Approximately 191g weight (158g in the LightSpray edition)
- Roughly 39.5mm heel stack with a 5mm heel-to-toe drop
- True-to-size fit, roomier through the toe box than its predecessor
Built for Marathon Racing and Tempo Training
The Cloudboom Strike 2 is designed for race day and dedicated speed sessions, not easy recovery runs. Its stiff, propulsive ride rewards midfoot and forefoot strikers more than heel strikers. Some runners note the toe box runs roomy while the midfoot needs firm lace tightening, which can cause minor lace bite for narrower feet. The thick rubber outsole makes it one of the more durable and slip-resistant options among current super shoes.
Who Should Wear the Cloudboom Strike 2
This shoe suits marathoners and competitive racers chasing a personal best. It fits serious tempo trainers who want carbon-plate propulsion in structured workouts. It also suits runners upgrading from the original Cloudboom Strike who want a lighter, livelier ride. Sizing runs true to size for most runners.
Related product: Want an even lighter race-day option? The LightSpray Cloudboom Strike 2 drops to roughly 158g with a laceless, robot-sprayed one-piece upper.
FEATURED SPECIFICATIONS TABLE
| Spec | Detail |
|---|---|
| Midsole | Dual-layer Helion™ HF with CloudTec Sphere geometry |
| Plate | Full-length curved carbon fiber Speedboard® |
| Upper | Lenoweave interlocking mesh construction |
| Outsole | Thick, full-coverage rubber |
| Heel stack | ~39.5mm |
| Heel-to-toe drop | 5mm |
| Weight | ~191g (158g LightSpray version) |
| Fit | True to size; roomy toe box, snug midfoot |
| Best use | Marathon racing, tempo training |
FAQ / PEOPLE ALSO ASK
Does the Cloudboom Strike 2 run true to size?
Yes, though the toe box runs roomy compared to the original model.
How much does the Cloudboom Strike 2 weigh?
Approximately 191g standard, or 158g in the LightSpray version.
What’s the heel-to-toe drop on the Cloudboom Strike 2?
It has a 5mm drop, up slightly from the original’s 4mm.
Is the Cloudboom Strike 2 good for training or just racing?
It’s built primarily for race day and tempo work, not easy runs.
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