ALTRA RUNNING SHOES SIZE CHARTS

At Altra, we design shoes differently. While most footwear is built to taper at the toes, our FootShape™ design allows your toes to relax and spread out naturally. Because of this unique construction, finding your size is about more than just a number, it’s about finding the right volume and shape for your journey.

Our Signature FootShape™ Fits
We know that every foot is unique. To ensure every runner finds their perfect match, we offer three distinct fit profiles. While all three feature our signature FootShape™ comfort, the width and volume vary to accommodate different foot shapes:

Original Fit: This is the fit that started it all. It is our most generous option, offering the highest volume and maximum room for natural toe splay.

Standard Fit: Our most common fit, designed to provide a secure midfoot lockdown while still allowing the forefoot the freedom it needs.

Slim Fit: Engineered for those who prefer a closer-to-foot feel or have a narrower foot profile, without sacrificing the space your toes require to function.

Wide Fit: For runners who need even more room through the midfoot and forefoot, we offer dedicated Wide versions of our most popular models (built on a 2E last for men and a D last for women).

Official Size Charts
To find your size, measure the length of your foot from heel to toe in centimeters and compare it to the charts below. We recommend leaving approximately 1 cm to 1.5 cm of space at the front of the shoe to allow for natural foot expansion during your run.

ALTRA RUNNING MEN'S SHOE SIZE CHART

ALTRA RUNNING WOMEN'S SHOE SIZE CHART