Flat feet spread wide under full body weight, and Altra’s foot-shaped toe box gives them room to do it. In our best running shoes for flat feet guide we picked the Paradigm for wide splay, straight lasts and bunions. The roomy toe box allows natural toe splay and reduces friction across bunions, while a medial GuideRail steps in only when the arch collapses too far.
It feels balanced and spacious, and the zero-drop platform encourages an upright posture and midfoot landing. Zero drop does increase the load on the Achilles and calves, so runners with active posterior tibial tendonitis should transition into it slowly.
Who it’s for: runners with flat feet, wide forefeet or bunions who are comfortable with (or moving towards) zero drop.
