What do you get when you improve on the already adventurous Superior? A lightweight, lightning-fast shoe you can trust on any trail. This certified speed-seeker is trail-ready with a MaxTrac™ sticky rubber outsole, the lightweight and responsive Quantic™ midsole, and the improved upper that’s more locked-in and durable. Throw in improved breathability, better drainage, and a removable StoneGuard™, and the Superior 4.5 is ready to blaze trail like never before.



  • Technical Fast Trail
  • Speed Work



  • Lightweight Cushioning
  • Quantic midsole material for great underfoot comfort
  • "Borrito" tongue wrap construction for a secured midfoot lockdown fit.
  • Designed for the runner who is looking for a fast, responsive shoe for training or racing.

Altra Superior 4.5

  • Features

    • Weight: 8.9 oz / 252 g
    • Insole: 6 mm Contour Footbed with removable StoneGuard™
    • Midsole: Quantic™ with InnerFlex™
    • Outsole: MaxTrac™ Rubber with TrailClaw™
    • Cushion: Low
    • Stack Height: 21 mm
    • Upper: Seamless wrap-around engineered knit

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Please note we are limited by stock availability and price changes from suppliers. Please contact to confirm price and stock.