| Chios to Oswego (Illinois) | 5,541.12 mi (8,917.57 km) |
| Chios to Oswego (New York) | 5,002.20 mi (8,050.26 km) |
| Chios to Otsego (Minnesota) | 5,553.71 mi (8,937.83 km) |
| Chios to Ottawa (Illinois) | 5,575.05 mi (8,972.18 km) |
| Chios to Ottawa (Kansas) | 5,948.81 mi (9,573.69 km) |
| Chios to Ottumwa (Iowa) | 5,723.58 mi (9,211.21 km) |
| Chios to Overland (Missouri) | 5,762.04 mi (9,273.10 km) |
| Chios to Overland Park (Kansas) | 5,913.21 mi (9,516.40 km) |
| Chios to Overlea (Maryland) | 5,173.33 mi (8,325.68 km) |
| Chios to Oviedo (Florida) | 5,850.31 mi (9,415.16 km) |
| Chios to Owasso (Oklahoma) | 6,088.47 mi (9,798.44 km) |
| Chios to Owatonna (Minnesota) | 5,599.18 mi (9,011.01 km) |
| Chios to Owensboro (Kentucky) | 5,680.77 mi (9,142.32 km) |
| Chios to Owings Mills (Maryland) | 5,182.91 mi (8,341.09 km) |
| Chios to Owosso (Michigan) | 5,322.98 mi (8,566.50 km) |
