Ultra Running Events by State/Province
| State | Number of Events |
| Alabama | 39 |
| Alaska | 27 |
| Alberta | 30 |
| Arizona | 76 |
| Arkansas | 28 |
| British Columbia | 59 |
| California | 476 |
| Colorado | 128 |
| Connecticut | 29 |
| Delaware | 7 |
| District of Columbia | 3 |
| Florida | 126 |
| Georgia | 124 |
| Hawaii | 18 |
| Idaho | 46 |
| Illinois | 69 |
| Indiana | 36 |
| Iowa | 30 |
| Kansas | 49 |
| Kentucky | 35 |
| Louisiana | 26 |
| Maine | 18 |
| Manitoba | 12 |
| Maryland | 40 |
| Massachusetts | 52 |
| Michigan | 58 |
| Minnesota | 39 |
| Mississippi | 17 |
| Missouri | 56 |
| Montana | 31 |
| Nebraska | 13 |
| Nevada | 46 |
| New Brunswick | 1 |
| New Hampshire | 22 |
| New Jersey | 60 |
| New Mexico | 38 |
| New York | 117 |
| Newfoundland | 8 |
| North Carolina | 130 |
| North Dakota | 5 |
| Nova Scotia | 2 |
| Ohio | 100 |
| Oklahoma | 31 |
| Ontario | 60 |
| Oregon | 83 |
| Pennsylvania | 99 |
| Prince Edward Island | 1 |
| Quebec | 21 |
| Rhode Island | 8 |
| Saskatchewan | 2 |
| South Carolina | 77 |
| South Dakota | 10 |
| Tennessee | 79 |
| Texas | 169 |
| Utah | 68 |
| Vermont | 28 |
| Virginia | 113 |
| Washington | 161 |
| West Virginia | 33 |
| Wisconsin | 57 |
| Wyoming | 21 |
| Yukon | 4 |