| Group Swim Leader | July 11, 2020 | #1: Louise Twining-Ward |
| Group Swim Leader #2 (slower pace) | July 11, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | July 12, 2020 | #1: Ericksito Viruet |
| Group Swim Leader #2 (slower pace) | July 12, 2020 | #1: Patricia Sener |
| Group Swim Leader | July 18, 2020 | #1: LOUISE TWINING-WARD |
| Group Swim Leader #2 (slower pace) | July 18, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | July 19, 2020 | #1: Abigail Fairman |
| Group Swim Leader #2 (slower pace) | July 19, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | July 25, 2020 | #1: Louise Twining-Ward |
| Group Swim Leader #2 (slower pace) | July 25, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | July 26, 2020 | #1: Nicholas Burnham |
| Group Swim Leader #2 (slower pace) | July 26, 2020 | #1: Elena Pavlova |
| Group Swim Leader | August 1, 2020 | #1: Nicholas Burnham |
| Group Swim Leader #2 (slower pace) | August 1, 2020 | #1: Elena Pavlova |
| Group Swim Leader | August 2, 2020 | #1: Nicholas Burnham |
| Group Swim Leader #2 (slower pace) | August 2, 2020 | #1: Abigail Fairman |
| Group Swim Leader | August 8, 2020 | #1: Elena Pavlova |
| Group Swim Leader #2 (slower pace) | August 8, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | August 9, 2020 | #1: Louise Twining-Ward |
| Group Swim Leader #2 (slower pace) | August 9, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | August 15, 2020 | #1: Nicholas Burnham |
| Group Swim Leader #2 (slower pace) | August 15, 2020 | #1: Lori Carena |
| Group Swim Leader | August 16, 2020 | #1: Lori Carena |
| Group Swim Leader #2 (slower pace) | August 16, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | August 22, 2020 | #1: Nicholas Burnham |
| Group Swim Leader #2 (slower pace) | August 22, 2020 | #1: Elena Pavlova |
| Group Swim Leader | August 23, 2020 | #1: Abigail Fairman |
| Group Swim Leader #2 (slower pace) | August 23, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | August 29, 2020 | #1: Nicholas Burnham |
| Group Swim Leader #2 (slower pace) | August 29, 2020 | #1: Elena Pavlova |
| Group Swim Leader | August 30, 2020 | #1: Elena Pavlova |
| Group Swim Leader #2 (slower pace) | August 30, 2020 | #1: Nicholas Burnham |
| Group Swim Leader | September 5, 2020 | #1: Louise Twining-Ward |
| Group Swim Leader #2 (slower pace) | September 5, 2020 | #1: Elena Pavlova |
| Group Swim Leader | September 6, 2020 | #1: Louise Twining-Ward |
| Group Swim Leader #2 (slower pace) | September 6, 2020 | #1: (empty) - sign-ups closed |
| Group Swim Leader | September 12, 2020 | #1: Louise Twining-Ward |
| Group Swim Leader #2 (slower pace) | September 12, 2020 | #1: (empty) - sign-ups closed |
| Group Swim Leader | September 13, 2020 | #1: Louise Twining-Ward |
| Group Swim Leader #2 (slower pace) | September 13, 2020 | #1: (empty) - sign-ups closed |