| Trail Name | First Name | Last Name | Date Taken | |
|---|---|---|---|---|
| The Other Rock | Dwayne S. | Johnson | 2013-10-27 | View |
| The Otter S.O. | 1991-07-05 | View | ||
| the Outlaw | Brian | 1989-06-20 | View | |
| The Outlaw | Ivana | Vu | 2013-10-29 | View |
| The Outlaw | Jim | Blauch | 1986-10-02 | View |
| The Outstanding Yeti | Kevin | Grieshop | 2018-06-08 | View |
| The Overland Hermits | Jac | Darnell | 2002-08-09 | View |
| The Overland Hermits | Sher | Darnell | 2002-08-09 | View |
| The Oz's | 2006-06-15 | View | ||
| The Ozark Two | Ross | Young | 1980-07-22 | View |