|Representing the United States|
|1900 Paris||200 metres|
|1900 Paris||400 metre hurdles|
|1900 Paris||60 metres|
|1900 Paris||100 metres|
|1900 Paris||200 metre hurdles|
Born in Ashley, Pennsylvania, Tewksbury studied for a dental degree at the University of Pennsylvania, graduating in 1899. Running for the university team, he won the IC4A titles in the 110 and 220 y in 1898 and 1899.
After graduating in 1899, he headed for Paris to compete in the Olympic Games. Tewksbury entered in 5 events, but had strong competition, among others from fellow Penn student Alvin Kraenzlein. In the 100 m, Tewksbury equalled the world record in the semi-finals, but placed second in the final to Frank Jarvis. The following day, he took another second place, behind Kraenzlein, in the 60 m, before entering the 400 m hurdles.
At the time, this event had probably never been contested in the United States, but Tewksbury easily beat the local favourite for the 400 m hurdles title. The event was quite different from present day, as the hurdles were actually telephone poles laid over the track, and the final hurdles was a water barrier (like in the steeplechase). In the final of the 200 m hurdles, he placed third (with Kraenzlein the winner). The final of the 200 m was held a week later; in that race Tewksbury won his second individual Olympic gold, finishing immediately ahead of Norman Pritchard of India.
- "Walter Tewksbury biography and Olympic results". sports-reference.com. Retrieved January 7, 2010.