| 3766 | 15 May 26 | New River Rush Adventure Race | 15H adventure race | Oak Hill, WV |
| 3767 | 25 Apr 26 | Falling Water 100K | 100K | Oak Hill, WV |
| 3768 | 20 Jun 26 | Return of the Black Swamp Mud Run | 5K | Oak Harbor, OH |
| 3769 | 31 Jan 26 | Winter Deception Pass | 50K | Oak Harbor, WA |
| 3770 | 04 Apr 26 | Deception Pass 13.1M and 10K | 10K/13.1M | Oak Harbor, WA |
| 3771 | 26 Apr 26 | Whidbey Island Marathon | 5K/10K/13.1M/26.2M | Oak Harbor, WA |
| 3772 | 07 Mar 26 | Oak Forest Fleadh 5K | 5K | Oak Forest, IL |
| 3773 | 14 Feb 26 | Spirits Run 5K | 5K | Oak Forest, IL |
| 3774 | 02 Aug 26 | 2026 Stagecoach Gravel Triathlon | triathlon | Oak Creek, CO |
| 3775 | 09 May 26 | Pink 5K | 5K | Oak Brook, IL |
| 3776 | 08 Mar 26 | Dream Team Dri Tri Relay Oak Brook Park District | other dry triathlon/other triathlon relay | Oak Brook, IL |
| 3777 | 06 Jun 26 | Tom's Try-athlon Oak Brook Park District | youth triathlon | Oak Brook, IL |
| 3778 | 24 May 26 | Martha's Vineyard Memorial 5K Road Race | 1M/5K | Oak Bluffs, MA |
| 3779 | 26 Apr 26 | MV Spring Classic Marathon | 13.1M/26.2M | Oak Bluffs, MA |
| 3780 | 26 Apr 26 | 2026 MV Spring Classic Marathon & Half Marathon | triathlon | Oak Bluffs, MA |