| Oswego to Oerlinghausen | 4,291.76 mi (6,906.92 km) |
| Oswego to Oestrich-Winkel | 4,341.98 mi (6,987.74 km) |
| Oswego to Offenburg | 4,398.36 mi (7,078.48 km) |
| Oswego to Oftersheim | 4,387.88 mi (7,061.60 km) |
| Oswego to Ohrdruf | 4,409.55 mi (7,096.48 km) |
| Oswego to Ohringen | 4,428.58 mi (7,127.11 km) |
| Oswego to Olbernhau | 4,508.53 mi (7,255.78 km) |
| Oswego to Olching | 4,536.13 mi (7,300.19 km) |
| Oswego to Oldenburg | 4,231.91 mi (6,810.60 km) |
| Oswego to Oldenburg in Holstein | 4,280.45 mi (6,888.71 km) |
| Oswego to Olfen | 4,254.96 mi (6,847.70 km) |
| Oswego to Olpe | 4,297.39 mi (6,915.98 km) |
| Oswego to Olsberg | 4,308.43 mi (6,933.75 km) |
| Oswego to Oranienburg | 4,420.54 mi (7,114.18 km) |
| Oswego to Ortenberg | 4,367.19 mi (7,028.31 km) |
