Quick Definition: Stack height refers to the total thickness of shoe material (in millimeters) sitting between your foot and the ground, measured at both the heel and forefoot.

Understanding Stack Categories

• Low Stack (<20mm): Minimalist feel with high ground feedback and natural foot movement.
• Standard Stack (20-30mm): Balanced cushion and stability for general training.
• Maximal Stack (30mm+): Maximum impact protection for long-distance running.

Top Recommended Models

• Hoka Bondi 8 – Ultra-thick maximalist cushion for plush comfort.
• Xero Shoes Prio – Low stack minimalist trainer for ground control.

Frequently Asked Questions

Does higher stack height cause ankle rolls?

Higher stack shoes elevate your center of gravity, which can increase lever force on uneven trail ground if not paired with a wide base.

How do I measure stack height?

Stack height is measured by total sole depth including the insole, midsole foam, and outsole tread.