| Personal Details | |
| Name | Marcus Smallbone |
| Known As | Marcus |
| Year of Birth | 1972 |
| Eligibility Category | Open/Male |
| Membership Details | |||
| Member Number | 604534 | ||
| Member Status | Current | ||
| Ranked Club | Newquay Cormorants SC | ||
| Country of International Representation | England | ||
| Membership Categories |
| SE Club Compete |
| Clubs & Organisations | |
| Club | Ranked |
| Newquay Cormorants SC | Yes |
| Click For Personal Best | 2024 Short Course | Short Course PB | 2024 Long Course | Long Course PB |
| 50m Freestyle | 25.82 | 25.82 | 27.45 | 27.45 |
| 100m Freestyle | 56.77 | 56.77 | 1:00.23 | 1:00.23 |
| 200m Freestyle | . | 2:06.53 | . | . |
| 400m Freestyle | . | 4:40.39 | . | . |
| 800m Freestyle | . | . | . | . |
| 1500m Freestyle | . | . | . | . |
| 50m Breaststroke | 31.60 | 31.60 | . | . |
| 100m Breaststroke | 1:10.01 | 1:10.01 | . | . |
| 200m Breaststroke | . | . | . | . |
| 50m Butterfly | 27.57 | 27.57 | 28.34 | 28.34 |
| 100m Butterfly | 1:02.06 | 1:02.06 | 1:05.18 | 1:05.18 |
| 200m Butterfly | 2:39.66 | 2:39.66 | . | . |
| 50m Backstroke | 29.82 | 29.82 | 30.99 | 30.99 |
| 100m Backstroke | 1:04.28 | 1:04.28 | 1:10.23 | 1:10.23 |
| 200m Backstroke | . | 2:21.14 | . | . |
| 200m Individual Medley | 2:31.80 | 2:19.71 | 2:25.65 | 2:25.65 |
| 400m Individual Medley | . | 5:09.08 | 5:32.31 | 5:32.31 |
| 100m Individual Medley | 1:04.78 | 1:02.66 | . | . |
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