Doubts swirled around my head, and my right quad muscles ached with cramp-like pain. It was only ten miles into the 2021 Philadelphia Marathon but as I watched what felt like hundreds of runners zip past me, I started to recalibrate my pre-race goal: Three hours and 50 minutes became four hours. Then four and a half hours. Then simply finishing.

The race turned into a mental battle. My legs screamed for me to stop and walk, while my brain urged me to continue on pace. The 10th mile would be my slowest up to that point. I tried to find motivation wherever I could. I repeated the mantras, “mind over body” and “don’t run scared,” to myself as I locked on to the runners in front of me. I visualized how satisfying it would feel when I crossed the finish line with another sub-four hour marathon. I thought about my supporters back home who were tracking my race online.