| Pombal to Olympia Heights (Florida) | 4,166.85 mi (6,705.90 km) |
| Pombal to Omaha (Nebraska) | 4,374.62 mi (7,040.27 km) |
| Pombal to On Top of the World Designated Place (Florida) | 4,142.53 mi (6,666.76 km) |
| Pombal to Onalaska (Wisconsin) | 4,071.01 mi (6,551.66 km) |
| Pombal to Oneida (New York) | 3,381.48 mi (5,441.97 km) |
| Pombal to Oneonta (New York) | 3,368.35 mi (5,420.84 km) |
| Pombal to Ontario (California) | 5,612.37 mi (9,032.24 km) |
| Pombal to Ontario (Oregon) | 5,126.44 mi (8,250.22 km) |
| Pombal to Opa-locka (Florida) | 4,155.87 mi (6,688.23 km) |
| Pombal to Opelika (Alabama) | 4,171.62 mi (6,713.57 km) |
| Pombal to Opelousas (Louisiana) | 4,583.96 mi (7,377.17 km) |
| Pombal to Orange (California) | 5,632.49 mi (9,064.62 km) |
| Pombal to Orange (Texas) | 4,682.52 mi (7,535.78 km) |
| Pombal to Orange City (Florida) | 4,097.41 mi (6,594.14 km) |
| Pombal to Orangeburg (South Carolina) | 3,916.71 mi (6,303.33 km) |
