| Cliftonville to Olympia Heights (Florida) | 4,502.99 mi (7,246.85 km) |
| Cliftonville to Omaha (Nebraska) | 4,350.82 mi (7,001.97 km) |
| Cliftonville to On Top of the World Designated Place (Florida) | 4,414.79 mi (7,104.91 km) |
| Cliftonville to Onalaska (Wisconsin) | 4,047.96 mi (6,514.55 km) |
| Cliftonville to Oneida (New York) | 3,491.18 mi (5,618.52 km) |
| Cliftonville to Oneonta (New York) | 3,493.94 mi (5,622.95 km) |
| Cliftonville to Ontario (California) | 5,475.32 mi (8,811.68 km) |
| Cliftonville to Ontario (Oregon) | 4,888.00 mi (7,866.48 km) |
| Cliftonville to Opa-locka (Florida) | 4,490.55 mi (7,226.84 km) |
| Cliftonville to Opelika (Alabama) | 4,365.31 mi (7,025.29 km) |
| Cliftonville to Opelousas (Louisiana) | 4,742.70 mi (7,632.64 km) |
| Cliftonville to Orange (California) | 5,495.71 mi (8,844.50 km) |
| Cliftonville to Orange (Texas) | 4,830.09 mi (7,773.29 km) |
| Cliftonville to Orange City (Florida) | 4,381.61 mi (7,051.52 km) |
| Cliftonville to Orangeburg (South Carolina) | 4,140.20 mi (6,663.01 km) |
