| Ilica to Oerlinghausen | 1,745.40 mi (2,808.95 km) |
| Ilica to Oestrich-Winkel | 1,742.83 mi (2,804.81 km) |
| Ilica to Offenburg | 1,729.09 mi (2,782.71 km) |
| Ilica to Oftersheim | 1,709.30 mi (2,750.85 km) |
| Ilica to Ohrdruf | 1,638.56 mi (2,637.01 km) |
| Ilica to Ohringen | 1,666.61 mi (2,682.15 km) |
| Ilica to Olbernhau | 1,526.52 mi (2,456.70 km) |
| Ilica to Olching | 1,572.70 mi (2,531.02 km) |
| Ilica to Oldenburg | 1,786.65 mi (2,875.33 km) |
| Ilica to Oldenburg in Holstein | 1,711.64 mi (2,754.63 km) |
| Ilica to Olfen | 1,794.10 mi (2,887.32 km) |
| Ilica to Olpe | 1,764.22 mi (2,839.24 km) |
| Ilica to Olsberg | 1,742.14 mi (2,803.71 km) |
| Ilica to Oranienburg | 1,581.04 mi (2,544.44 km) |
| Ilica to Ortenberg | 1,702.05 mi (2,739.19 km) |
