Nike ReactX Infinity Run 4 - Trainers - White - UK 10

The ReactX Infinity Run 4 offers excellent cushioning and comfort, making them suitable for marathon training and even the race itself for many runners. However, individual needs and preferences for marathon shoes can vary.

Ensure there is about a thumb's width of space between your longest toe and the front of the shoe when standing. The heel should feel secure without slipping, and the midfoot should be snug but not constricting.

The engineered mesh upper offers some protection, but these are not waterproof. They are best suited for dry conditions. In wet weather, water can enter, and the traction may be reduced on slick surfaces.

ReactX foam is designed to provide more energy return and improved cushioning while also reducing the environmental impact of foam production compared to prior iterations.

It is generally recommended to replace running shoes every 300-500 miles (480-800 km), or when you notice significant wear on the outsole or a reduction in cushioning and support.

The white color will show dirt and scuffs more readily than darker colors. Regular cleaning with a mild soap and water solution is recommended to maintain their appearance.

Wear the shoes for short periods initially to allow them to break in. Ensure the lacing is adjusted correctly for your foot's shape.

Check the lacing system; try a runner's knot or ensure the laces are pulled snug around the ankle area. Verify you have the correct shoe size.

While durable, foam cushioning naturally degrades with extensive use. Consider replacing the shoes after approximately 300-500 miles (480-800 km) or when you notice a significant loss in responsiveness.

Clean promptly with appropriate shoe cleaner. Avoid exposure to harsh chemicals or prolonged direct sunlight which can cause yellowing.