| Bottrop to Olympia Heights (Florida) | 4,732.57 mi (7,616.34 km) |
| Bottrop to Omaha (Nebraska) | 4,540.35 mi (7,306.98 km) |
| Bottrop to On Top of the World Designated Place (Florida) | 4,639.66 mi (7,466.80 km) |
| Bottrop to Onalaska (Wisconsin) | 4,239.50 mi (6,822.82 km) |
| Bottrop to Oneida (New York) | 3,703.79 mi (5,960.68 km) |
| Bottrop to Oneonta (New York) | 3,708.30 mi (5,967.93 km) |
| Bottrop to Ontario (California) | 5,638.40 mi (9,074.13 km) |
| Bottrop to Ontario (Oregon) | 5,034.66 mi (8,102.51 km) |
| Bottrop to Opa-locka (Florida) | 4,720.06 mi (7,596.21 km) |
| Bottrop to Opelika (Alabama) | 4,582.92 mi (7,375.50 km) |
| Bottrop to Opelousas (Louisiana) | 4,954.98 mi (7,974.27 km) |
| Bottrop to Orange (California) | 5,658.72 mi (9,106.82 km) |
| Bottrop to Orange (Texas) | 5,040.70 mi (8,112.22 km) |
| Bottrop to Orange City (Florida) | 4,607.57 mi (7,415.17 km) |
| Bottrop to Orangeburg (South Carolina) | 4,361.60 mi (7,019.32 km) |
