Running Retraining to Minimize Braking Forces

Inclusion Criteria: * Ability to commit to a 15-week half-marathon training program * Have been running for at least 3 months prior to study commencement * Have participated in 2 or less half-marathons previously * Ability to run on a treadmill unaided * Ability to travel to testing facility for running analysis pre- and post-training program as well as for gait retraining sessions * Ability to understand written and spoken English * Meet the screening requirements (display less than -0.27BW mean peak braking force at baseline/screening assessment) Exclusion Criteria: * Any lower extremity pathology in the previous 3 months or currently have pain in their lower back or lower extremities while running * Have undergone hip, knee, or ankle joint surgery