What are the extra lace holes on running shoes for? We’re here to unravel the mystery and teach you how to tie a heel lock to secure your feet and ankles on the trail.

Illumiseen provides a helpful tip for runners to prevent these blisters with a “heel lock” or “lace lock” that creates extra friction between the laces at your ankle. Video courtesy of ...

Turns out that extra hole helps runners tie their shoes extra tight with a "lace lock" or "heel lock" method. Follow BI Video: On Twitter More from Sports The extra eyelet at the top of running ...