[1] Lightbody, born in Pittsburgh and graduating from Central High School in Muncie, Indiana, had great success at the 1904 Summer Olympics, held in St. Louis, Missouri, United States.

Later that day, he added a second place to his tally, when he competed with the Chicago Athletic Association in the 4-mile team event.

In 1905, Lightbody won AAU titles in both the 800 and 1500 metres, and the following year he competed in his second Olympics, the 1906 Intercalated Games of in Athens.

Lightbody lost a close race to fellow American James Sullivan in the first round of the 1500 metres, eliminating him from further competition.

He was defeated by a mere ten yards by Harry Sewell in the first round of the 3200 metre steeplechase and did not qualify for the final.