| Petroupoli to Navodari | 504.22 mi (811.47 km) |
| Petroupoli to Negresti-Oas | 679.73 mi (1,093.93 km) |
| Petroupoli to Nehoiu | 523.44 mi (842.40 km) |
| Petroupoli to Ocna Mures | 577.46 mi (929.34 km) |
| Petroupoli to Odobesti | 561.80 mi (904.13 km) |
| Petroupoli to Odorheiu Secuiesc | 578.07 mi (930.31 km) |
| Petroupoli to Oltenita | 445.57 mi (717.08 km) |
| Petroupoli to Onesti | 589.76 mi (949.13 km) |
| Petroupoli to Oradea | 630.89 mi (1,015.32 km) |
| Petroupoli to Orastie | 540.65 mi (870.09 km) |
| Petroupoli to Oravita | 495.00 mi (796.62 km) |
| Petroupoli to Orsova | 467.15 mi (751.80 km) |
| Petroupoli to Otelu Rosu | 521.69 mi (839.57 km) |
| Petroupoli to Otopeni | 466.94 mi (751.46 km) |
| Petroupoli to Ovidiu | 499.83 mi (804.40 km) |
