On Cloudspike Citius 2 - Ultra-Fast Track Spikes for Middle Distance

The Cloudspike Citius 2 delivers speed and power for races between 800m and 1500m. Built in close collaboration with elite track runners, these middle-distance spikes feature CloudTec® cushioning engineered for the fastest runs, combined with an optimised stack height up to the 20mm race-legal limit. Crafted using advanced engineering and data-driven geometry enhancements, the Cloudspike Citius 2 unlocks full potential within race-day regulations.

CloudTec® with Helion™ HF Hyper Foam

The CloudTec® cushioning system is engineered specifically for fast track running, delivering the responsive characteristics needed for middle-distance racing. A Helion™ HF hyper foam midsole provides responsiveness with each stride, maintaining energy return across the demands of 800m to 1500m efforts. The optimised stack height maxes out the 20mm limit allowed under race regulations, providing maximum cushioning and energy return within the rules.

Nylon-Blend Speedboard® for Propulsive Push-Offs

A nylon-blend Speedboard® evenly distributes force and amplifies responsiveness, creating powerful push-offs during acceleration and finishing kicks. This plate works with the CloudTec® and Helion™ HF foam to channel energy forward efficiently, particularly valuable during the sustained high-speed running that defines middle-distance track racing. Six spikes and strategically placed grip provide traction on track surfaces.

Ultralight One-Piece Mesh Upper

An ultralight, one-piece mesh upper delivers breathability whilst helping to reduce overheating during intense racing efforts. The cage-like construction locks down the foot for a supportive, race-ready fit that maintains security through the full range of paces encountered in middle-distance events. The secure upper construction keeps the foot stable during aggressive accelerations and tactical surges.

Key Features:

- CloudTec® cushioning system for fast runs

- Helion™ HF hyper foam midsole for responsiveness

- Nylon-blend Speedboard® for propulsive push-offs

- Optimised stack height (20mm race-legal limit)

- Ultralight one-piece mesh upper

- Cage-like construction for foot lockdown

- Six spikes with strategic grip placement

- Breathable construction

- Race legal

- Built with elite track runner collaboration

Best For:

- 800m racing

- 1500m racing

- Middle-distance track events

- Championship racing

- Competitive track athletes

- Race-legal spike requirements

Is the Cloudspike Citius 2 Right for You?

The Cloudspike Citius 2 is built for competitive middle-distance track runners racing 800m to 1500m events who want maximum cushioning and energy return within race-legal specifications. If you're competing at levels where marginal gains matter, need spikes that handle the sustained high-speed demands of middle-distance running, or want the advanced engineering and data-driven geometry developed through elite athlete collaboration, the Cloudspike Citius 2 delivers. The optimised 20mm stack height provides more underfoot protection and energy return than traditional minimal spikes, whilst the CloudTec® and Speedboard® combination creates propulsive push-offs during tactical surges and finishing kicks.