Ultra Running Events by State/Province
| State | Number of Events |
| Alabama | 45 |
| Alaska | 29 |
| Alberta | 35 |
| Arizona | 80 |
| Arkansas | 28 |
| British Columbia | 59 |
| California | 481 |
| Colorado | 137 |
| Connecticut | 29 |
| Delaware | 7 |
| District of Columbia | 3 |
| Florida | 131 |
| Georgia | 128 |
| Hawaii | 20 |
| Idaho | 48 |
| Illinois | 72 |
| Indiana | 39 |
| Iowa | 31 |
| Kansas | 59 |
| Kentucky | 38 |
| Louisiana | 29 |
| Maine | 18 |
| Manitoba | 13 |
| Maryland | 42 |
| Massachusetts | 54 |
| Michigan | 63 |
| Minnesota | 39 |
| Mississippi | 18 |
| Missouri | 60 |
| Montana | 35 |
| Nebraska | 13 |
| Nevada | 46 |
| New Brunswick | 2 |
| New Hampshire | 22 |
| New Jersey | 69 |
| New Mexico | 40 |
| New York | 123 |
| Newfoundland | 8 |
| North Carolina | 135 |
| North Dakota | 6 |
| Nova Scotia | 2 |
| Ohio | 106 |
| Oklahoma | 31 |
| Ontario | 61 |
| Oregon | 86 |
| Pennsylvania | 102 |
| Prince Edward Island | 1 |
| Quebec | 22 |
| Rhode Island | 8 |
| Saskatchewan | 2 |
| South Carolina | 81 |
| South Dakota | 10 |
| Tennessee | 82 |
| Texas | 177 |
| Utah | 76 |
| Vermont | 30 |
| Virginia | 115 |
| Washington | 164 |
| West Virginia | 36 |
| Wisconsin | 63 |
| Wyoming | 21 |
| Yukon | 4 |