| Agios Athanasios to Olympia Heights (Florida) | 6,403.94 mi (10,306.15 km) |
| Agios Athanasios to Omaha (Nebraska) | 6,274.67 mi (10,098.11 km) |
| Agios Athanasios to On Top of the World Designated Place (Florida) | 6,338.75 mi (10,201.24 km) |
| Agios Athanasios to Onalaska (Wisconsin) | 5,975.81 mi (9,617.14 km) |
| Agios Athanasios to Oneida (New York) | 5,436.41 mi (8,749.06 km) |
| Agios Athanasios to Oneonta (New York) | 5,438.42 mi (8,752.30 km) |
| Agios Athanasios to Ontario (California) | 7,321.56 mi (11,782.92 km) |
| Agios Athanasios to Ontario (Oregon) | 6,679.85 mi (10,750.17 km) |
| Agios Athanasios to Opa-locka (Florida) | 6,392.06 mi (10,287.02 km) |
| Agios Athanasios to Opelika (Alabama) | 6,306.15 mi (10,148.77 km) |
| Agios Athanasios to Opelousas (Louisiana) | 6,687.77 mi (10,762.93 km) |
| Agios Athanasios to Orange (California) | 7,341.51 mi (11,815.01 km) |
| Agios Athanasios to Orange (Texas) | 6,775.59 mi (10,904.25 km) |
| Agios Athanasios to Orange City (Florida) | 6,301.60 mi (10,141.44 km) |
| Agios Athanasios to Orangeburg (South Carolina) | 6,074.76 mi (9,776.38 km) |
