Nike React Infinity Run Flyknit 2 - Grey - Pink - Size 11

Yes, the Nike React Infinity Run Flyknit 2 provides ample cushioning and support for marathon distances, making them suitable for marathon training and racing.

While they offer good stability, these trainers are primarily designed for running. For dedicated cross-training or gym workouts, specialized shoes might offer better performance and support.

It's recommended to try them on if possible. Use the Nike sizing guide online for reference, and consider your typical running shoe size. The fit should be snug but not constricting, with enough room in the toe box.

React cushioning provides a soft, responsive, and lightweight feel that helps absorb impact and return energy, contributing to a comfortable and efficient run.

Typically, running shoes like the React Infinity Run Flyknit 2 should be replaced every 300-500 miles (480-800 km) or when you notice significant wear on the outsole or a decrease in cushioning.

The 'South Beach' colourway is a specific aesthetic choice for this model. Availability may vary, but it is part of the standard offering for the React Infinity Run Flyknit 2 series.

Ensure laces are adjusted correctly to secure the midfoot without overtightening. Consider using different lacing techniques if needed. If discomfort persists, the shoe may not be the right fit for your foot shape.

React foam is durable, but cushioning can feel less responsive over time with extensive mileage. This is normal wear and tear. Consider replacing the shoes after approximately 300-500 miles (480-800 km).

The Flyknit upper is designed to be snug. Wear the shoes for short periods initially to allow them to break in and adapt to your foot's contours. Ensure socks are not too thick.