Nike React Infinity Run Flyknit 2 - Black - UK 6

Yes, their durable React cushioning and supportive design make them a great option for marathon training, especially for daily miles and long runs where comfort is paramount.

You should have 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 any pinching.

It is not recommended to machine wash the Nike React Infinity Run Flyknit 2, as this can damage the materials and affect the shoe's structure. Hand wash with a mild soap and water using a soft brush.

The React Infinity Run Flyknit 2 features Nike's advanced React foam, offering a more responsive and durable cushioning system compared to older foam technologies. The Flyknit upper also provides a more adaptive and breathable fit.

The wider base and inherent stability of the React Infinity Run Flyknit 2 can be beneficial for runners needing moderate support. However, individuals with specific biomechanical needs should consult with a footwear specialist.

With regular use (30-40 miles per week), you can typically expect these shoes to last between 300-500 miles. This can vary based on running surface, individual biomechanics, and care.

Ensure the laces are tightened correctly to secure your foot within the wider base of the shoe. If the issue persists, consider trying a half size up or down to find a better fit.

Loosen the laces, particularly around the midfoot. The Flyknit material is designed to be adaptive, but it might take a few wears to break in. If discomfort remains, check alternative sizing.

While the rubber outsole provides good grip, always exercise caution on wet or slippery surfaces. For challenging conditions, consider shoes with more aggressive tread patterns.

The React foam may feel firmer on the first few wears. Give the shoes at least 15-20 miles to break in; the cushioning typically softens and becomes more responsive with use.