| Rome to Oswego (Illinois) | 4,846.32 mi (7,799.40 km) |
| Rome to Oswego (New York) | 4,286.69 mi (6,898.76 km) |
| Rome to Otsego (Minnesota) | 4,891.09 mi (7,871.45 km) |
| Rome to Ottawa (Illinois) | 4,880.24 mi (7,853.98 km) |
| Rome to Ottawa (Kansas) | 5,261.93 mi (8,468.26 km) |
| Rome to Ottumwa (Iowa) | 5,037.80 mi (8,107.56 km) |
| Rome to Overland (Missouri) | 5,060.88 mi (8,144.70 km) |
| Rome to Overland Park (Kansas) | 5,225.65 mi (8,409.88 km) |
| Rome to Overlea (Maryland) | 4,443.16 mi (7,150.57 km) |
| Rome to Oviedo (Florida) | 5,101.42 mi (8,209.94 km) |
| Rome to Owasso (Oklahoma) | 5,394.35 mi (8,681.37 km) |
| Rome to Owatonna (Minnesota) | 4,929.68 mi (7,933.56 km) |
| Rome to Owensboro (Kentucky) | 4,967.60 mi (7,994.59 km) |
| Rome to Owings Mills (Maryland) | 4,453.38 mi (7,167.02 km) |
| Rome to Owosso (Michigan) | 4,622.81 mi (7,439.69 km) |
