Mark Williams
| Date | Swim | Route | Km | Age | Time |
|---|---|---|---|---|---|
| 2014 Jan 19 | 'Au'au Channel | Lanai to Maui to Lanai | 28.3 | 10:33:00 (05:17:00 / 05:16:00) | |
| 2014 | Hawaiian Islands | Kalohi Channel Lanai to Molokai |
15 | NA:NA:00 | |
| 2015 | 'Au'au Channel | Lanai to Maui | 14.2 | NA:NA:00 | |
| 2016 | 'Au'au Channel | Lanai to Maui | 14.2 | NA:NA:00 | |
| 2017 | 'Au'au Channel | Lanai to Maui | 14.2 | NA:NA:00 | |
| 2023 Aug 20 | English Channel (CSPF) | England to France | 33 | 13:52:00 |