Nike React Infinity Run Flyknit 3 - White - Pink - UK 12.5

Yes, the Nike React Infinity Run Flyknit 3 offers excellent cushioning and comfort, making it a suitable choice for marathon training and racing for many runners.

It is recommended to try them on if possible. Generally, runners should aim for about a thumb's width of space between their longest toe and the end of the shoe when standing. Refer to Nike's official sizing chart for precise measurements.

These shoes are primarily designed for road running. The outsole offers good traction on pavement and light, dry surfaces but may not provide adequate grip or protection for technical or muddy trails.

Flyknit is a precisely engineered, lightweight yarn that forms the upper in one piece. It offers a more adaptive, sock-like fit, enhanced breathability, and reduced weight compared to traditional stitched mesh uppers.

The lifespan varies based on mileage, terrain, and running form, but typically, the cushioning and support are optimal for 300-500 miles (480-800 km) of running.

No, the Flyknit upper is highly breathable but not waterproof. They are designed for dry conditions and will get wet in rain or puddles.

Adjust the lacing system to achieve a secure yet comfortable fit. Ensure you are wearing appropriate running socks. If the issue persists, consider trying a different size or width if available.

Ensure the shoes are broken in properly. Check for any debris inside the shoe. If persistent discomfort occurs, consult with a running specialist or consider if this model is suitable for your foot type and gait.

The React foam is designed for durability, but like all cushioning, it will eventually degrade with extensive use. Log your mileage and consider replacement after approximately 300-500 miles (480-800 km).