| Little Elm to Olympia Heights (Florida) | 1,121.44 mi (1,804.78 km) |
| Little Elm to Omaha (Nebraska) | 560.13 mi (901.44 km) |
| Little Elm to On Top of the World Designated Place (Florida) | 909.66 mi (1,463.95 km) |
| Little Elm to Onalaska (Wisconsin) | 801.01 mi (1,289.09 km) |
| Little Elm to Oneida (New York) | 1,337.04 mi (2,151.75 km) |
| Little Elm to Oneonta (New York) | 1,348.61 mi (2,170.39 km) |
| Little Elm to Ontario (California) | 1,189.21 mi (1,913.85 km) |
| Little Elm to Ontario (Oregon) | 1,310.58 mi (2,109.18 km) |
| Little Elm to Opa-locka (Florida) | 1,119.66 mi (1,801.93 km) |
| Little Elm to Opelika (Alabama) | 670.65 mi (1,079.31 km) |
| Little Elm to Opelousas (Louisiana) | 338.66 mi (545.03 km) |
| Little Elm to Orange (California) | 1,202.50 mi (1,935.23 km) |
| Little Elm to Orange (Texas) | 281.97 mi (453.79 km) |
| Little Elm to Orange City (Florida) | 970.09 mi (1,561.20 km) |
| Little Elm to Orangeburg (South Carolina) | 926.48 mi (1,491.03 km) |
