| Messkirch to Olympia Heights (Florida) | 4,894.23 mi (7,876.50 km) |
| Messkirch to Omaha (Nebraska) | 4,767.06 mi (7,671.85 km) |
| Messkirch to On Top of the World Designated Place (Florida) | 4,814.83 mi (7,748.72 km) |
| Messkirch to Onalaska (Wisconsin) | 4,464.34 mi (7,184.66 km) |
| Messkirch to Oneida (New York) | 3,903.41 mi (6,281.93 km) |
| Messkirch to Oneonta (New York) | 3,905.13 mi (6,284.69 km) |
| Messkirch to Ontario (California) | 5,883.98 mi (9,469.36 km) |
| Messkirch to Ontario (Oregon) | 5,287.54 mi (8,509.47 km) |
| Messkirch to Opa-locka (Florida) | 4,881.97 mi (7,856.78 km) |
| Messkirch to Opelika (Alabama) | 4,773.63 mi (7,682.41 km) |
| Messkirch to Opelousas (Louisiana) | 5,154.59 mi (8,295.51 km) |
| Messkirch to Orange (California) | 5,904.34 mi (9,502.12 km) |
| Messkirch to Orange (Texas) | 5,242.84 mi (8,437.54 km) |
| Messkirch to Orange City (Florida) | 4,779.98 mi (7,692.64 km) |
| Messkirch to Orangeburg (South Carolina) | 4,544.95 mi (7,314.39 km) |
