| Differdange to Olympia Heights (Florida) | 4,723.95 mi (7,602.47 km) |
| Differdange to Omaha (Nebraska) | 4,586.40 mi (7,381.10 km) |
| Differdange to On Top of the World Designated Place (Florida) | 4,640.85 mi (7,468.73 km) |
| Differdange to Onalaska (Wisconsin) | 4,283.61 mi (6,893.81 km) |
| Differdange to Oneida (New York) | 3,724.31 mi (5,993.71 km) |
| Differdange to Oneonta (New York) | 3,726.45 mi (5,997.15 km) |
| Differdange to Ontario (California) | 5,706.68 mi (9,184.02 km) |
| Differdange to Ontario (Oregon) | 5,114.15 mi (8,230.43 km) |
| Differdange to Opa-locka (Florida) | 4,711.62 mi (7,582.62 km) |
| Differdange to Opelika (Alabama) | 4,596.19 mi (7,396.85 km) |
| Differdange to Opelousas (Louisiana) | 4,975.68 mi (8,007.58 km) |
| Differdange to Orange (California) | 5,727.06 mi (9,216.81 km) |
| Differdange to Orange (Texas) | 5,063.58 mi (8,149.04 km) |
| Differdange to Orange City (Florida) | 4,606.70 mi (7,413.76 km) |
| Differdange to Orangeburg (South Carolina) | 4,368.97 mi (7,031.19 km) |
