| Kalyvia Thorikou to Olympia Heights (Florida) | 5,857.60 mi (9,426.90 km) |
| Kalyvia Thorikou to Omaha (Nebraska) | 5,790.21 mi (9,318.44 km) |
| Kalyvia Thorikou to On Top of the World Designated Place (Florida) | 5,798.79 mi (9,332.26 km) |
| Kalyvia Thorikou to Onalaska (Wisconsin) | 5,487.64 mi (8,831.50 km) |
| Kalyvia Thorikou to Oneida (New York) | 4,916.72 mi (7,912.69 km) |
| Kalyvia Thorikou to Oneonta (New York) | 4,916.20 mi (7,911.87 km) |
| Kalyvia Thorikou to Ontario (California) | 6,890.73 mi (11,089.56 km) |
| Kalyvia Thorikou to Ontario (Oregon) | 6,275.33 mi (10,099.16 km) |
| Kalyvia Thorikou to Opa-locka (Florida) | 5,845.84 mi (9,407.96 km) |
| Kalyvia Thorikou to Opelika (Alabama) | 5,776.78 mi (9,296.84 km) |
| Kalyvia Thorikou to Opelousas (Louisiana) | 6,165.68 mi (9,922.70 km) |
| Kalyvia Thorikou to Orange (California) | 6,910.99 mi (11,122.16 km) |
| Kalyvia Thorikou to Orange (Texas) | 6,255.98 mi (10,068.03 km) |
| Kalyvia Thorikou to Orange City (Florida) | 5,760.25 mi (9,270.23 km) |
| Kalyvia Thorikou to Orangeburg (South Carolina) | 5,540.50 mi (8,916.57 km) |
