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Altra Men's The 3-Sum Triathlon Running Shoes

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SKU: A1224
Product Code: 7530943

Availability: Usually Ships in 24 Hours
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For a smooth ride and high-performance look to the Altra® Men's The 3-SUM™ Running Shoes to carry you across the finish line.

  • Lightweight, cushioned design for performance.
  • Ideal for triathlons, road, and track.
  • Reduces the occurrence of shin splints, knee pain, forefoot pain, and your PR.
  • ZeroDrop™ Platform improves cushioning.
  • Sock-free, quick-drying upper.
  • Blended EVA / AltraBound™ midsole.
  • Asymmetrical lacing for a more secure fit.
  • 5mm insole for support.
  • Weight: 6.7oz.
  • Stack height: 18mm.




Altra Zero Drop™ Footwear was developed with one simple mission: to provide runners with a shoe that allowed them to run naturally. Working with engineers, designers, elite runners and biomechanical experts, Altra created the unique Zero Drop™ barefoot running shoe.

Blending cushioned protection with the benefits of barefoot freedom, Altra footwear is designed to reduce injury and promote proper technique for the most natural run. Every shoe features Zero Drop™ and a foot-shaped, gender-specific design so everyone can find the right fit and run better and healthier. Its footwear has reduced injuries, improved running technique and changed lives. Helping customers run better and live healthier continues to be the foundation and motivation of Altra.