| Hattingen to Olympia Heights (Florida) | 4,745.74 mi (7,637.53 km) |
| Hattingen to Omaha (Nebraska) | 4,554.61 mi (7,329.93 km) |
| Hattingen to On Top of the World Designated Place (Florida) | 4,653.16 mi (7,488.53 km) |
| Hattingen to Onalaska (Wisconsin) | 4,253.76 mi (6,845.76 km) |
| Hattingen to Oneida (New York) | 3,717.77 mi (5,983.17 km) |
| Hattingen to Oneonta (New York) | 3,722.23 mi (5,990.35 km) |
| Hattingen to Ontario (California) | 5,652.49 mi (9,096.80 km) |
| Hattingen to Ontario (Oregon) | 5,048.50 mi (8,124.78 km) |
| Hattingen to Opa-locka (Florida) | 4,733.23 mi (7,617.40 km) |
| Hattingen to Opelika (Alabama) | 4,596.76 mi (7,397.76 km) |
| Hattingen to Opelousas (Louisiana) | 4,968.98 mi (7,996.80 km) |
| Hattingen to Orange (California) | 5,672.80 mi (9,129.49 km) |
| Hattingen to Orange (Texas) | 5,054.74 mi (8,134.82 km) |
| Hattingen to Orange City (Florida) | 4,621.00 mi (7,436.79 km) |
| Hattingen to Orangeburg (South Carolina) | 4,375.28 mi (7,041.33 km) |
