400 m Individual Medley, Men
| Competition | 1966 USA Swimming National Championships (Outdoor/LCM) |
|---|---|
| Venue |
Lincoln, Nebraska
 USA
|
| Held | 19 August 1966 |
| Status | Medal |
| Competitors | 8 |
| Countries | 2 |
Lincoln, Nebraska / Woods Memorial Park / long-course metric (50m)
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Dick Roth Santa Clara Swim Club |
USA |
4:47.9 | * | |
| 🥈 | David Johnson Wilmington Aquatic Club |
USA |
4:52.1 | ||
| 🥉 | Ken Webb Indiana Aquatic Club |
USA |
4:52.4 | ||
| 4 | Phil Houser Los Angeles Athletic Club |
USA |
4:55.1 | ||
| 5 | Peter Williams Spartan Swim Club |
USA |
4:56.3 | ||
| 6 | John Calvert North Carolina State Aquatics Team |
USA |
4:56.4 | ||
| 7 | Ralph Hutton Foothill Aquatic Club |
 CAN |
4:56.8 | ||
| 8 | Michael Siebert Los Angeles Athletic Club |
USA |
4:59.0 |