| Ialysos to Oerlinghausen | 1,435.12 mi (2,309.61 km) |
| Ialysos to Oestrich-Winkel | 1,374.01 mi (2,211.25 km) |
| Ialysos to Offenburg | 1,317.93 mi (2,121.01 km) |
| Ialysos to Oftersheim | 1,327.57 mi (2,136.52 km) |
| Ialysos to Ohrdruf | 1,316.30 mi (2,118.38 km) |
| Ialysos to Ohringen | 1,287.19 mi (2,071.53 km) |
| Ialysos to Olbernhau | 1,228.03 mi (1,976.32 km) |
| Ialysos to Olching | 1,179.46 mi (1,898.16 km) |
| Ialysos to Oldenburg | 1,503.30 mi (2,419.33 km) |
| Ialysos to Oldenburg in Holstein | 1,484.39 mi (2,388.89 km) |
| Ialysos to Olfen | 1,466.50 mi (2,360.10 km) |
| Ialysos to Olpe | 1,421.58 mi (2,287.81 km) |
| Ialysos to Olsberg | 1,413.74 mi (2,275.20 km) |
| Ialysos to Oranienburg | 1,340.50 mi (2,157.32 km) |
| Ialysos to Ortenberg | 1,351.33 mi (2,174.75 km) |
