Nike Run

Frequently Asked Questions

• What’s the difference between Nike’s ZoomX, React, and ReactX foams, and when should I pick each?

  ZoomX is a PEBA-based foam prized for maximum energy return and is commonly used in Nike’s racing and high-performance long-distance models. React and ReactX prioritize durable, responsive cushioning for daily training—React is slightly firmer and more durable, while ReactX skews toward a livelier, more responsive ride for mixed training. Choose ZoomX for race days and long tempo efforts, React/ReactX for daily mileage and workouts where durability and consistent responsiveness matter.
• How do the Pegasus, Vomero, and Structure models compare, and which should I choose for my running needs?

  The Pegasus line is Nike’s versatile, responsive daily trainer suited to neutral runners who want a balanced mix of cushioning and responsiveness. Vomero targets runners seeking maximum cushioning and a plush ride for long runs, while Structure focuses on supportive stability features (medial support) for mild overpronators. Pick Pegasus for everyday tempo and variety, Vomero for long-distance comfort, and Structure if you need added pronation control.
• What do stack height and heel-to-toe drop mean for how a Nike shoe will feel and perform?

  Stack height is the total cushioning thickness underfoot and higher stacks (e.g., 40+ mm) generally give a plusher, more protected feel that reduces fatigue on long runs, while lower stacks increase ground feel and responsiveness. Heel-to-toe drop affects foot strike and calf loading: higher drops can ease strain on the Achilles and favor heel strikers, whereas lower drops encourage midfoot/forefoot striking and a more connected feel. Match stack and drop to your gait, injury history, and training goals rather than current trends.
• How do Nike’s trail running shoes differ from their road models, and what terrain is each best for?

  Nike trail models add grippy rubber outsoles, rock plates or reinforced toe caps, and more protective, durable uppers to handle technical, uneven surfaces and loose conditions. Road models prioritize breathable uppers, smoother transitions, and lighter, more responsive midsoles for pavement and track. Choose trail-specific Nikes for rocky, rooty, or muddy routes and road models for pavement, treadmill, and smoother paths.
• How should I size and pick a width/toebox for Nike running shoes, especially for long runs?

  Allow about a thumb’s width of space in the toebox to accommodate foot swelling on long runs, and don’t rely solely on nominal length—fit can vary by model and upper construction. If you have wider forefeet or expect heavy mileage, try wide-toebox or wide-width options and check heel lockdown and midfoot saddle fit to prevent slippage. When in doubt, test run or try on later in the day when feet are slightly swollen to confirm comfort.