| Personal Details | |
| Name | Oliver Threlfall |
| Known As | Oliver |
| Year of Birth | 2009 |
| Eligibility Category | Open/Male |
| Membership Details | |||
| Member Number | 1267728 | ||
| Member Status | Current | ||
| Ranked Club | Clitheroe Dolphins SC | ||
| Country of International Representation | England | ||
| Membership Categories |
| SE Club Compete |
| Clubs & Organisations | |
| Club | Ranked |
| Clitheroe Dolphins SC | Yes |
| Click For Personal Best | 2024 Short Course | Short Course PB | 2024 Long Course | Long Course PB |
| 50m Freestyle | 31.43 | 31.43 | 31.81 | 31.81 |
| 100m Freestyle | 1:08.81 | 1:08.81 | 1:10.19 | 1:10.19 |
| 200m Freestyle | 2:35.42 | 2:32.83 | . | . |
| 400m Freestyle | 5:18.86 | 5:18.86 | . | 5:44.47 |
| 800m Freestyle | 11:15.73 | 11:15.73 | . | . |
| 1500m Freestyle | . | . | . | . |
| 50m Breaststroke | 42.34 | 42.34 | 44.97 | 44.97 |
| 100m Breaststroke | . | 1:37.49 | 1:37.71 | 1:37.71 |
| 200m Breaststroke | . | 3:57.95 | . | 3:41.06 |
| 50m Butterfly | . | 1:00.83 | . | . |
| 100m Butterfly | . | . | . | . |
| 200m Butterfly | . | . | . | . |
| 50m Backstroke | 36.47 | 36.47 | 37.94 | 37.94 |
| 100m Backstroke | . | 1:20.61 | 1:20.25 | 1:20.25 |
| 200m Backstroke | 2:54.82 | 2:54.40 | . | . |
| 200m Individual Medley | . | 3:16.53 | . | . |
| 400m Individual Medley | . | . | . | . |
| 100m Individual Medley | . | 1:30.03 | . | . |
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