Sizing

Finding the right insole size is simple with Run 619. Our insoles are available in multiple thicknesses and widths to fit your shoes perfectly. Use our sizing guide to select the best option for your footwear and activity. If you’re between sizes, you can easily trim our insoles for a custom fit.

How to Ensure a Great Fit

Let’s start with the truth: there’s no such thing as a universal β€œtrue to size” in footwear. Shoe sizing isn’t standardized because manufacturers use different lastsβ€”the forms used to shape shoes. These vary by brand, model, and even gender or age group, which means a size 10 in one brand might fit very differently from a size 10 in another.

Finding the right size Run 619 insole is straightforward. The best way? Measure the length of your current insole from heel to toe and compare it to our sizing chart. Choose an insole that matches or is slightly longer (never shorter)β€”you can always trim the front edge for a custom fit.

No insole to measure? Use your foot. Measure from your heel to your longest toe, then add a little extra lengthβ€”about a thumb’s widthβ€”for ideal spacing in your shoe.

Insole size chart for men's and women's shoes with red and black text on a dark background.

πŸ”΅ Performance Insoles (MFM Line)


βœ… Available in Standard Width Only
πŸ“ Use this chart for our Performance insoles with heel cup, cushion, and arch support.

Run 619 Flat Insole Sizing Chart

🟦 Flat Insoles (3mm, 4.5mm, 6mm)

βœ… Available in Regular and Wide EE Widths
πŸ“ Use this chart if you’re buying one of our Original Flat Insoles.