300 m Individual Medley, Men
| Competition | 1946 USA Swimming National Championships (Outdoor/LCM) |
|---|---|
| Venue |
San Diego, CA; Jasonville, IN
 USA
|
| Held | 4 August 1946 |
| Status | Medal |
| Competitors | 8 |
| Countries | 2 |
San Diego, California / US Naval Base San Diego Pool / long-course metric (50m)
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Harry Holiday Hawai'i Swim Club |
USA |
3:58.8 | ||
| 🥈 | Bob Kang Hawai'i Swim Club |
USA |
— | ||
| 🥉 | Joe Verdeur Philadelphia Turngemeinde |
USA |
— | ||
| 4 | Ralph Wright Hawai'i Swim Club |
USA |
— | ||
| 5 | Apolonio Castillo |  MEX |
— | ||
| 6 | Paul Herron Pasadena Swim Club |
USA |
— | ||
| 7 | Rube Wolf, Jr. Unattached, Los Angeles, CA |
USA |
— | ||
| 8 | James Marcus Pasadena Swim Club |
USA |
— |