| Parla to Oerlinghausen | 1,003.01 mi (1,614.19 km) |
| Parla to Oestrich-Winkel | 883.60 mi (1,422.02 km) |
| Parla to Offenburg | 809.37 mi (1,302.56 km) |
| Parla to Oftersheim | 872.65 mi (1,404.40 km) |
| Parla to Ohrdruf | 1,010.62 mi (1,626.43 km) |
| Parla to Ohringen | 896.58 mi (1,442.91 km) |
| Parla to Olbernhau | 1,093.82 mi (1,760.34 km) |
| Parla to Olching | 925.25 mi (1,489.04 km) |
| Parla to Oldenburg | 1,054.25 mi (1,696.65 km) |
| Parla to Oldenburg in Holstein | 1,184.99 mi (1,907.06 km) |
| Parla to Olfen | 954.77 mi (1,536.56 km) |
| Parla to Olpe | 929.99 mi (1,496.68 km) |
| Parla to Olsberg | 965.91 mi (1,554.49 km) |
| Parla to Oranienburg | 1,178.48 mi (1,896.58 km) |
| Parla to Ortenberg | 934.16 mi (1,503.39 km) |
