300 m Individual Medley, Women
| Competition | 1948 USA Swimming National Championships (Outdoor/LCM) |
|---|---|
| Venue |
Cuyahoga Falls, OH; San Diego, CA
 USA
|
| Held | 26 June 1948 |
| Status | Medal |
| Competitors | 3 |
| Countries | 1 |
San Diego, California / US Naval Base San Diego Pool / long-course metric (50m)
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Barbara Jensen Athens Aquatic Club, Oakland, CA |
USA |
4:31.3 | ||
| 🥈 | Nancy Merki Multnomah Athletic Club |
USA |
— | ||
| 🥉 | Maria Olsson | USA |
— |