400 m Freestyle, Men
| Competition | 1939 USA Swimming National Championships (Outdoor/LCM) |
|---|---|
| Venue |
Detroit, MI; Des Moines, IA
 USA
|
| Held | 26 August 1939 |
| Status | Medal |
| Competitors | 6 |
| Countries | 3 |
Detroit, Michigan / Detroit Boat Club
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Ralph Flanagan Unattached, Austin, TX |
USA |
4:50.2 | * | |
| 🥈 | Kiyoshi Nakama Alexander House Community Association, Maui |
USA |
— | ||
| 🥉 | James Tanaka Outrigger Canoe Club, Honolulu, Hawai'i |
USA |
— | ||
| 4 | Carlos E. Rivas Outrigger Canoe Club, Honolulu, Hawai'i |
USA |
— | ||
| 5 | Hilo Hirose Alexander House Community Association, Maui |
 JPN |
— | ||
| 6 | Gordon Devlin Toronto, ON, CAN |
 CAN |
— |