| Trail Name | First Name | Last Name | Date Taken | |
|---|---|---|---|---|
| Oreamnos | Aley | Regs | 1995-07-07 | View |
| Oregon Slug | Scotty | 1995-06-25 | View | |
| Oreo | Kelsey | Collasius | 2013-06-05 | View |
| Oreo | Abby | Waghburn | 2019-07-04 | View |
| Oreo | Dan | Barowy | 2003-06-26 | View |
| Organic | Colton | Cunov | 2018-06-27 | View |
| Organic Trooper | Kassey | Beardsley | 2017-06-16 | View |
| Organizer | 2023-06-22 | View | ||
| Organizer | 2023-06-22 | View | ||
| Orient Express | Bill | Irwin | 1990-06-25 | View |