| Grumo Appula to Navodari | 646.12 mi (1,039.82 km) |
| Grumo Appula to Negresti-Oas | 577.61 mi (929.57 km) |
| Grumo Appula to Nehoiu | 568.56 mi (915.01 km) |
| Grumo Appula to Ocna Mures | 515.08 mi (828.94 km) |
| Grumo Appula to Odobesti | 614.58 mi (989.07 km) |
| Grumo Appula to Odorheiu Secuiesc | 564.03 mi (907.72 km) |
| Grumo Appula to Oltenita | 547.98 mi (881.89 km) |
| Grumo Appula to Onesti | 619.45 mi (996.91 km) |
| Grumo Appula to Oradea | 491.97 mi (791.74 km) |
| Grumo Appula to Orastie | 466.47 mi (750.71 km) |
| Grumo Appula to Oravita | 374.93 mi (603.40 km) |
| Grumo Appula to Orsova | 385.64 mi (620.63 km) |
| Grumo Appula to Otelu Rosu | 421.25 mi (677.94 km) |
| Grumo Appula to Otopeni | 533.74 mi (858.97 km) |
| Grumo Appula to Ovidiu | 642.59 mi (1,034.14 km) |
