| Idil to Oerlinghausen | 1,895.79 mi (3,050.98 km) |
| Idil to Oestrich-Winkel | 1,884.23 mi (3,032.38 km) |
| Idil to Offenburg | 1,863.09 mi (2,998.36 km) |
| Idil to Oftersheim | 1,848.14 mi (2,974.29 km) |
| Idil to Ohrdruf | 1,785.83 mi (2,874.01 km) |
| Idil to Ohringen | 1,805.25 mi (2,905.27 km) |
| Idil to Olbernhau | 1,675.59 mi (2,696.60 km) |
| Idil to Olching | 1,707.58 mi (2,748.09 km) |
| Idil to Oldenburg | 1,941.24 mi (3,124.13 km) |
| Idil to Oldenburg in Holstein | 1,872.51 mi (3,013.51 km) |
| Idil to Olfen | 1,942.53 mi (3,126.20 km) |
| Idil to Olpe | 1,910.03 mi (3,073.90 km) |
| Idil to Olsberg | 1,889.84 mi (3,041.41 km) |
| Idil to Oranienburg | 1,738.70 mi (2,798.16 km) |
| Idil to Ortenberg | 1,845.83 mi (2,970.57 km) |
