| Silea to Oswego (Illinois) | 4,678.51 mi (7,529.33 km) |
| Silea to Oswego (New York) | 4,134.24 mi (6,653.41 km) |
| Silea to Otsego (Minnesota) | 4,704.74 mi (7,571.54 km) |
| Silea to Ottawa (Illinois) | 4,712.46 mi (7,583.97 km) |
| Silea to Ottawa (Kansas) | 5,089.39 mi (8,190.58 km) |
| Silea to Ottumwa (Iowa) | 4,864.40 mi (7,828.49 km) |
| Silea to Overland (Missouri) | 4,897.58 mi (7,881.89 km) |
| Silea to Overland Park (Kansas) | 5,053.50 mi (8,132.82 km) |
| Silea to Overlea (Maryland) | 4,304.88 mi (6,928.04 km) |
| Silea to Oviedo (Florida) | 4,988.54 mi (8,028.28 km) |
| Silea to Owasso (Oklahoma) | 5,226.48 mi (8,411.20 km) |
| Silea to Owatonna (Minnesota) | 4,746.93 mi (7,639.45 km) |
| Silea to Owensboro (Kentucky) | 4,813.40 mi (7,746.41 km) |
| Silea to Owings Mills (Maryland) | 4,314.41 mi (6,943.37 km) |
| Silea to Owosso (Michigan) | 4,458.53 mi (7,175.32 km) |
