Unisex On Running LightSpray Cloudboom Strike 2

Engineered in collaboration with elite athletes to dominate the half and full marathon distance, this evolutionary, laceless shoe stands as On Running’s most aggressive marathon racer yet.

By stripping away all unnecessary weight, this racer pairs a streamlined, high-propulsion midsole with On’s revolutionary robotic LightSpray™ upper. The result is a seamless, laceless, second-skin fit that completely eliminates traditional distractions, delivering a hyper-responsive ride tailored for peak performance. Built around the multi-directional flexibility of a CloudTec Sphere™ midsole, this weightless setup is meticulously designed to maximize your race-day potential and preserve vital muscle endurance from the starting line to the finish tape.

What to love: 

• Laceless Lightspray upper for seamless, second-skin fit.
• A multi-directional, flexible CloudTec Sphere™ midsole for a smoother, fluid strides.
• On Running's most aggressive and responsive racer for 5K to marathon distances.

UPPER

• 3-Minute Robotic Weave: LightSpray™ technology utilizes an automated process to spin a seamless, ultra-minimalist upper from a single, continuous  yarn strand—drastically reducing manufacturing waste.
• Second-Skin Synergy: The featherlight, distraction-free upper provides an adaptive, precision fit.
• Elite Run Sock High Hyper Included: to eliminate friction and slipping.

MIDSOLE

• CloudTec Sphere™ Cushioning: A strategic, thin gaps between the forefoot and midfoot. This allows the foam to flex freely and adapt multi-directionally for a smooth, ultra-responsive transition at high speed.
• Helion™ HF Hyper Foam: A lighter, exceptionally resilient superfoam formulation that maximizes underfoot energy return and provides superior impact absorption over long race distances.
• Carbon Speedboard®: A full-length carbon fiber plate embedded within the hyper foam to deliver rigid, aggressive leverage and snapping forward propulsion.

OUTSOLE

• Rubber Coverage in Contact-Point Areas: Updated, high-grip rubber compound split into two primary zones at the heel and forefoot, to maximize grip during toe-off and braking without weighing you down.