Saucony Endorphin Speed 5 Trainers - White - Red - Size UK 11

The main advantage is its ability to provide a fast, smooth, and propulsive ride thanks to the new nylon plate and PWRRUN PB cushioning, making it ideal for speed work and racing.

Yes, the Endorphin Speed 5 can be used for marathon running, especially by those who prefer a more responsive feel and are looking to maintain a fast pace. It offers a good balance of cushioning and propulsion for longer distances.

Nylon plates are generally more flexible and less stiff than carbon plates. This typically results in a smoother, more natural transition and a more forgiving feel underfoot, making them suitable for a wider range of runners and paces.

The best way to determine fit is to try them on with your usual running socks. Pay attention to the length, width, and how the lacing system secures your foot without causing pressure points. The shoe should feel snug but not tight.

While it's designed for speed, the Endorphin Speed 5 can be used for everyday training, especially for faster-paced workouts. For very long, slow runs, some runners might prefer a shoe with more plush cushioning.

The lifespan typically ranges from 300-500 miles (480-800 km), depending on running surface, mileage, foot strike, and maintenance. Monitor the outsole wear and cushioning response to determine when replacement is needed.

Loosen the laces, especially around the midfoot, and ensure you are wearing appropriate thickness socks. If the issue persists, the size may not be suitable.

Ensure the shoes are clean and that no debris is trapped in the outsole. While the PWRRUN PB cushioning is durable, like all foams, it will eventually compress with extensive use.

The outsole is designed for performance traction, but it's important to be mindful of surface conditions. Ensure the outsole is free from mud or debris. For very wet conditions, proceed with caution.