| Ilioupoli to Oerlinghausen | 1,213.13 mi (1,952.34 km) |
| Ilioupoli to Oestrich-Winkel | 1,139.33 mi (1,833.58 km) |
| Ilioupoli to Offenburg | 1,075.12 mi (1,730.24 km) |
| Ilioupoli to Oftersheim | 1,091.11 mi (1,755.98 km) |
| Ilioupoli to Ohrdruf | 1,095.14 mi (1,762.46 km) |
| Ilioupoli to Ohringen | 1,052.41 mi (1,693.70 km) |
| Ilioupoli to Olbernhau | 1,017.24 mi (1,637.09 km) |
| Ilioupoli to Olching | 944.73 mi (1,520.40 km) |
| Ilioupoli to Oldenburg | 1,286.20 mi (2,069.94 km) |
| Ilioupoli to Oldenburg in Holstein | 1,283.24 mi (2,065.17 km) |
| Ilioupoli to Olfen | 1,239.25 mi (1,994.37 km) |
| Ilioupoli to Olpe | 1,191.88 mi (1,918.14 km) |
| Ilioupoli to Olsberg | 1,187.79 mi (1,911.56 km) |
| Ilioupoli to Oranienburg | 1,141.49 mi (1,837.05 km) |
| Ilioupoli to Ortenberg | 1,121.66 mi (1,805.14 km) |
