| Petrosani to Oerlinghausen | 807.00 mi (1,298.75 km) |
| Petrosani to Oestrich-Winkel | 780.04 mi (1,255.35 km) |
| Petrosani to Offenburg | 756.84 mi (1,218.01 km) |
| Petrosani to Oftersheim | 742.29 mi (1,194.61 km) |
| Petrosani to Ohrdruf | 691.37 mi (1,112.66 km) |
| Petrosani to Ohringen | 699.39 mi (1,125.56 km) |
| Petrosani to Olbernhau | 588.15 mi (946.53 km) |
| Petrosani to Olching | 601.07 mi (967.34 km) |
| Petrosani to Oldenburg | 864.39 mi (1,391.09 km) |
| Petrosani to Oldenburg in Holstein | 826.25 mi (1,329.72 km) |
| Petrosani to Olfen | 848.37 mi (1,365.32 km) |
| Petrosani to Olpe | 811.26 mi (1,305.60 km) |
| Petrosani to Olsberg | 794.82 mi (1,279.14 km) |
| Petrosani to Oranienburg | 682.65 mi (1,098.62 km) |
| Petrosani to Ortenberg | 744.51 mi (1,198.17 km) |
