| O'Neill Cold Water Classic | - | Not Included | Not Included | |
| ONE BILLION RISING March/Parade and Festival | 02/14/2015 1:00 PM - 4:00 PM | Not Included | Not Included | |
| Omega Nu's VIRTUAL 30th Annual Ducky Derby | 04/25/2020 10:30 AM - 3:30 PM | Not Included | Not Included | |
| Omega Nu Ducky Derby - VIRTUAL | 04/27/2024 | Not Included | Not Included | |
| Omega Nu Ducky Derby | 04/26/2025 10:00 AM - 4:00 PM | Not Included | Not Included | |
| O'LO HUI NAHU: SURF DEMO, PADDLE-OUT, & LUAU | 07/19/2015 8:00 AM - 4:00 PM | Not Included | Not Included | |
| Oliver Tree | 10/01/2022 8:00 PM - 11:00 PM | Not Included | Not Included | |
| Odyssey Challenge Disc Golf Tournament | - | Not Included | Not Included | |
| Ocean's Edge - Food Trucks & Craft Fair | 09/24/2016 11:00 AM - 7:00 PM | Not Included | Not Included | |
| Oaxaca En Santa Cruz | 04/08/2023 6:00 PM - 9:00 PM | Not Included | Not Included | |
| Oakley's SURF SHOP CHALLENGE 2013 | 04/19/2013 8:00 AM - 4:00 PM | Not Included | Not Included | |
| Oakley's Surf Shop Challenge | 08/31/2012 8:00 AM - 4:00 PM | Not Included | Not Included | |
| OAKLEY'S SURF SHOP CHALLENGE | 08/31/2011 8:00 AM - 3:00 PM | Not Included | Not Included | |
| OAKLEY SURF SHOP CHALLENGE - Rescheduled | 08/27/2014 | Not Included | Not Included | |
| Oakley Surf Shop Challenge **Date to be determined (5.9.19 OR 5.10.19) by 5.6.19** | 05/10/2019 8:00 AM - 3:00 PM | Not Included | Not Included | |
| Oakley Surf Shop Challenge | 08/26/2010 8:00 AM - 4:00 PM | Not Included | Not Included | |
| Oakley Froggy Surf Contest | 06/12/2010 8:00 AM - 4:30 PM | Not Included | Not Included | |
| NSSA's Northwest Open Season #16 Surf Contest | 12/16/2012 7:00 AM - 6:00 PM | Not Included | Not Included | |
| NSSA Youth Surf Event Feb 2019 | - | Not Included | Not Included | |
| NSSA YOUTH SURF Event - Northwest 3 & 4 | 12/05/2015 7:00 AM | Not Included | Not Included | |
