Nike React Infinity Run Flyknit 2 - Black - UK 10

Yes, its responsive cushioning and comfort make it well-suited for the demands of marathon training, especially for daily runs and long runs.

This version features an updated foam midsole for enhanced softness and responsiveness, along with improved lockdown in the forefoot and a more comfortable tongue.

While they offer good cushioning, they are primarily designed for running. For specific gym activities like weightlifting, cross-training shoes might offer better stability.

React foam provides a soft, lightweight, and responsive cushioning that helps absorb impact and reduce fatigue during runs.

Ensure there's about a thumb's width of space between your longest toe and the end of the shoe. The heel should feel secure, and the midfoot should be comfortably snug without being restrictive.

With proper care and regular use for running, most users find the shoes maintain their performance for approximately 300-500 miles (480-800 km). This can vary based on running style, terrain, and maintenance.

No, the Flyknit upper is breathable and water-resistant to some degree, but the shoes are not waterproof. They are not designed for running in heavy rain or wet conditions.

Loosen the laces, especially around the midfoot and forefoot. Ensure you are wearing appropriate running socks. If the tightness persists, consider trying a half-size up.

The shoe's geometry may differ from your previous pair. Try wearing them for shorter runs initially to allow your feet to adapt. If discomfort continues, consider using aftermarket insoles.

While the outsole is durable, its grip on very wet or slick surfaces may be reduced. Exercise caution and reduce speed on such conditions.