| Martos to Olympia Heights (Florida) | 4,443.68 mi (7,151.41 km) |
| Martos to Omaha (Nebraska) | 4,667.52 mi (7,511.64 km) |
| Martos to On Top of the World Designated Place (Florida) | 4,425.83 mi (7,122.68 km) |
| Martos to Onalaska (Wisconsin) | 4,363.72 mi (7,022.74 km) |
| Martos to Oneida (New York) | 3,674.45 mi (5,913.46 km) |
| Martos to Oneonta (New York) | 3,661.05 mi (5,891.89 km) |
| Martos to Ontario (California) | 5,902.98 mi (9,499.92 km) |
| Martos to Ontario (Oregon) | 5,409.81 mi (8,706.25 km) |
| Martos to Opa-locka (Florida) | 4,432.91 mi (7,134.08 km) |
| Martos to Opelika (Alabama) | 4,460.45 mi (7,178.40 km) |
| Martos to Opelousas (Louisiana) | 4,873.89 mi (7,843.77 km) |
| Martos to Orange (California) | 5,923.13 mi (9,532.36 km) |
| Martos to Orange (Texas) | 4,972.82 mi (8,002.99 km) |
| Martos to Orange City (Florida) | 4,379.78 mi (7,048.58 km) |
| Martos to Orangeburg (South Carolina) | 4,204.30 mi (6,766.16 km) |
