Altra Olympus 3.5 Trail-Running Shoes - Men's

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Delivering a super-cushioned, flexible ride wherever you roam, the men's Altra Olympus 3.5 trail-running shoes make even the rockiest, rootiest trails feel like a cloud.


  • Zero Drop™ platforms (0mm heel-to-toe drop) place heel and forefoot the same distance from the ground for natural alignment and low-impact landing
  • Vibram® Megagrip™ rubber outsoles sculpted in the Altra TrailClaw™ pattern provide secure traction on varied terrain
  • FootShape™ toe boxes allow toes to splay for natural foot positioning and comfort
  • InnerFlex™ midsoles are more flexible and responsive than the previous version; 5mm contoured footbeds add cushioning
  • Updated upper fabric pattern offers enhanced durability
  • Built-in GaiterTrap™ secures your gaiters (not included) to your trail shoes to keep out dirt and debris
  • 33mm stack height provides ample cushion for long runs


View all Altra Men's Trail-Running Shoes

Technical Specs

Best Use

Trail Running

Trail-Running Shoe Type


Running Shoe Cushioning

Maximum Cushion

Heel-to-Toe Drop (mm)


Footwear Height


Footwear Closure







InnerFlex EVA


Vibram Megagrip rubber

Rock Plate


Weight (Pair)

1 lb. 5.4 oz.



Size Chart

U.S. Men's77.588.599.51010.51111.51212.513141516
Foot Length (in.)9.81010.210.410.610.81111.211.411.611.81212.212.61313.4

Sizing Notes

Altra’s unique FootShape™ toe box and Balanced Cushioning™ platform create a natural fit that follows the shape of your foot, instead of squeezing your toes and raising your heel. Your toes have room to spread out and your foot remains in a flat, natural position. When fitting, be sure to allow a full thumb’s width in front of your toes. If your feet are used to cramped toe boxes, Altra shoes may feel a little big at first. Give your toes some time to get used to the newfound wiggle room.

Altra offers a range of FootShape fits:

Original Fit: The fit that started it all, Original is the roomiest of the 3 options from Altra.

Standard Fit: The most common fit from Altra is right in the middle of Original and Slim.

Slim Fit: The slimmest-fitting Altra option still allows room for your toes to spread out naturally.

IS THIS SHOE TRUE TO SIZE? The product Features above will provide a suggestion if Altra advises you to size up or down in this particular shoe. If no such note exists, please order your regular size.

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