On Cloudmonster Void Trainers - Red/Brown - UK 13

Yes, the significant cushioning and energy return make them excellent for marathon distances, providing comfort and aiding performance over long mileage.

While they offer energy return, their primary design is for maximum cushioning. For very fast interval sessions, you might prefer a lighter, more responsive shoe. However, they can still be used effectively for tempo efforts.

The Cloudmonster is characterized by its maximalist cushioning approach, featuring larger Cloud elements and a more pronounced rocker than many other On models, designed for superior impact absorption and forward propulsion.

Refer to the sizing chart provided by On Running. It's recommended to measure your foot and compare it to the UK sizing. Most runners prefer a snug fit with a little room in the toe box.

The trainers are not waterproof, but they are designed with breathable materials. They offer some resistance to light moisture but are not intended for use in heavy rain or wet conditions.

The lifespan varies depending on usage, running style, and terrain. For dedicated runners, trainers typically last between 300-500 miles (500-800 km) before their cushioning and support degrade significantly.

Ensure laces are adjusted correctly for a snug but not overly tight fit. Allow a few runs for the shoes to break in and mold to your feet.

While designed for road traction, extreme wet conditions can reduce grip. Run with caution on very slick surfaces. Ensure the outsole is free from debris.

Cushioning materials naturally compress with use. If the 'bounce' feels significantly diminished after extensive mileage, it may be time to consider a new pair.