On Cloudspike Citius 2 Men's Running Spikes

Ultrafast mid-distance track and field spikes. Delivering responsiveness, speed and power for races between 800m-1500m.

Lightweight One-Piece Upper

The Cloudspike Citius has been specifically designed for athletes aiming for fast times and PBs and features a lightweight one-piece upper. Engineered for both race day performance and comfort, the upper provides a supportive feel alongside extra protection, helping you maintain peak performance throughout your track races. The lightweight, one-piece upper design ensures that the spike won't add unnecessary bulk and helps prevent irritation and discomfort from rubbing or chafing, thanks to its reduced seams and pressure points. A standard lacing system allows for a customisable fit, minimising in-shoe slippage and keeping your feet secure and stable as you strive for personal bests and race victories.

Advanced Midsole and Outsole

Constructed using On's highly responsive Swiss-engineered Helion HF hyper foam midsole, the Cloudspike Citius offers exceptional energy return that reduces impact on the body to prevent injury, perfect for middle-distance track races. Not only does On's hyper foam enable the midsole to deliver supreme energy return and comfort, but it also provides you with a supportive stride for a more efficient run. The responsive and supportive cushioning adapts to your running style, absorbing impact, reducing strain and helping you to feel like you're running on clouds. This cushioning midsole features the maximum allowed stack height to remain compliant with regulations to keep legs feeling fresh and fast, even on the last lap. As well as offering supportive energy return, the spikes also enable athletes to maintain an efficient and steady pace. This is provided by the half-length nylon-blend Speedboard. It works to deliver a harmonious balance between sturdy stability and potent propulsion to push you forward to the last lap. The Speedboard works to add an extra spring in your stride, therefore enhancing explosive toe-offs and encouraging a more natural stride. Lastly, the spikes utilise six lightweight spike pins alongside a surface-gripping heel pad to provide unmatched traction in wet and dry conditions.