| Competition | 1957 USA Swimming National Championships (Outdoor/LCM) | 
|---|---|
| Venue | Philadelphia, PA; Houston, TX | 
| Held | 4 August 1957 | 
| Status | Medal | 
| Competitors | 6 | 
| Countries | 2 | 
Philadelphia, Pennsylvania / John B. Kelly Pool, Fairmount Park / long-course metric (50m)
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Dick Hanley Detroit Athletic Club | 57.3 | |||
| 🥈 | Bill Cass Indianapolis Aquatic Club | — | |||
| 🥉 | Rex Aubrey New Haven Swim Club | — | |||
| 4 | Roger Anderson New Haven Swim Club | — | |||
| 5 | Jim Coles Phoenix Swim Club | — | |||
| 6 | Robin Moore Hawai'i Swim Club | — |