On Cloudboom Strike – Engineered to Outrun the Clock

Built for the marathon, the Cloudboom Strike is a race-day weapon combining maximum energy return with ultra-lightweight performance. Featuring On’s new Helion™ HF hyper foam and a propulsive Bounceboard construction, it delivers cushioned speed without compromising efficiency. With a carbon Speedboard® and breathable mesh upper, it’s engineered for powerful take-offs and smooth transitions—so you can chase every second.

Specifications:

• Weight: Men’s US 9: 219g; Women’s US 8: 210g
• Heel-to-Toe Drop: 4mm
• Stack Height: [Within World Athletics race-legal stack – approx. 39mm heel / 35mm forefoot]
• Midsole: Helion™ HF hyper foam with removable Bounceboard and spoon-shaped carbon Speedboard®
• Outsole: Minimalist rubber coverage with CloudTec® pods for traction and transition
• Upper: One-piece semi-transparent mesh with reinforced midfoot cage

Key Features:

• Helion™ HF Hyper Foam: Delivers explosive energy return in a lightweight package
• Bounceboard Construction: Removable cushioned layer amplifies rebound without breaking stack height rules
• Carbon Speedboard®: Spoon-shaped design maximizes propulsion for fast transitions
• Ultralight Mesh Upper: Breathable and race-ready with a secure midfoot lockdown
• CloudTec® Elements: Support smooth, efficient roll-through and reduce ground contact time

Ideal For:

Marathoners and competitive road racers seeking a race-legal carbon super shoe. Ideal for long distances at tempo, threshold, or race-day efforts. Best for runners focused on maximising performance and energy efficiency.

Lace up the Cloudboom Strike and strike fast, go long, and leave everything else behind.