| Exmouth to Olympia Heights (Florida) | 4,304.75 mi (6,927.82 km) |
| Exmouth to Omaha (Nebraska) | 4,201.11 mi (6,761.03 km) |
| Exmouth to On Top of the World Designated Place (Florida) | 4,223.07 mi (6,796.37 km) |
| Exmouth to Onalaska (Wisconsin) | 3,896.58 mi (6,270.94 km) |
| Exmouth to Oneida (New York) | 3,316.09 mi (5,336.74 km) |
| Exmouth to Oneonta (New York) | 3,316.66 mi (5,337.65 km) |
| Exmouth to Ontario (California) | 5,351.61 mi (8,612.58 km) |
| Exmouth to Ontario (Oregon) | 4,782.45 mi (7,696.61 km) |
| Exmouth to Opa-locka (Florida) | 4,292.42 mi (6,907.98 km) |
| Exmouth to Opelika (Alabama) | 4,182.93 mi (6,731.77 km) |
| Exmouth to Opelousas (Louisiana) | 4,566.40 mi (7,348.91 km) |
| Exmouth to Orange (California) | 5,372.03 mi (8,645.45 km) |
| Exmouth to Orange (Texas) | 4,655.67 mi (7,492.58 km) |
| Exmouth to Orange City (Florida) | 4,188.45 mi (6,740.67 km) |
| Exmouth to Orangeburg (South Carolina) | 3,953.23 mi (6,362.11 km) |
