On Cloudboom Max - White - Trainers - UK 11

The Cloudboom Max are designed with durability and comfort for long distances, making them suitable for significant training mileage, especially for marathon preparation. However, their advanced technology is particularly optimized for race day performance.

The Cloudboom Max features a double layer of Helion HF foam and a glass fibre-infused Speedboard, prioritizing enhanced cushioning and comfort for longer durations compared to the more race-focused, potentially firmer feel of the Cloudboom Echo.

The UK size 11 is a specific fit. We recommend measuring your foot length and comparing it to the On sizing chart, or trying them on if possible. A good fit means snug in the heel and midfoot, with a little room in the toe box.

These shoes are specifically engineered for road running and marathons. They are not designed for the specific demands of track and field events, which often require different types of footwear.

For optimal performance and cushioning, most runners find these shoes perform best between 300-500 miles (480-800 km). This can vary depending on running style, weight, and the surfaces used.

White trainers can show dirt more easily. Regular cleaning with a damp cloth and mild soap after runs will help maintain their appearance. Avoid wearing them in excessively muddy conditions.

The glass fibre-infused Speedboard is designed to provide a pop of energy return while being more comfortable over long distances than a rigid carbon plate. It offers support without excessive stiffness, adapting to a range of running styles.

Ensure laces are tied correctly and check for any debris caught in the outsole or midsole.

Verify you have the correct size. Try adjusting the lacing system for a more personalized fit. Consider if a sock issue might be contributing.

While durable, the foam and Speedboard will naturally degrade with very high mileage. Consider replacing the shoes after extensive use (typically 300-500 miles).

Ensure the rubber outsole is clean and free from mud or debris. The shoes are designed for road surfaces; performance on wet or slippery surfaces may be reduced.