| Massy to Oswego (Illinois) | 4,170.21 mi (6,711.30 km) |
| Massy to Oswego (New York) | 3,620.42 mi (5,826.51 km) |
| Massy to Otsego (Minnesota) | 4,208.00 mi (6,772.13 km) |
| Massy to Ottawa (Illinois) | 4,204.16 mi (6,765.94 km) |
| Massy to Ottawa (Kansas) | 4,583.60 mi (7,376.59 km) |
| Massy to Ottumwa (Iowa) | 4,359.01 mi (7,015.15 km) |
| Massy to Overland (Missouri) | 4,387.43 mi (7,060.89 km) |
| Massy to Overland Park (Kansas) | 4,547.49 mi (7,318.48 km) |
| Massy to Overlea (Maryland) | 3,789.08 mi (6,097.93 km) |
| Massy to Oviedo (Florida) | 4,474.53 mi (7,201.06 km) |
| Massy to Owasso (Oklahoma) | 4,718.40 mi (7,593.53 km) |
| Massy to Owatonna (Minnesota) | 4,247.47 mi (6,835.64 km) |
| Massy to Owensboro (Kentucky) | 4,300.24 mi (6,920.56 km) |
| Massy to Owings Mills (Maryland) | 3,798.65 mi (6,113.33 km) |
| Massy to Owosso (Michigan) | 3,948.62 mi (6,354.69 km) |
