Marathon runner who set the American record for the half marathon and the 20k, and competed in the 2008 Beijing Olympics.
He began running competitively in his junior year of high school, winning the National Scholastic mile race at 4 minutes and 6.15 seconds.
He started The Hall Steps Foundation to engage the running community to help end global poverty.
His wife Sara was also a professional runner.
Brian Maxwell, creator of the PowerBar, was also a competitive long-distance runner.