| Trevignano to Navodari | 811.09 mi (1,305.33 km) |
| Trevignano to Negresti-Oas | 555.25 mi (893.58 km) |
| Trevignano to Nehoiu | 687.28 mi (1,106.07 km) |
| Trevignano to Ocna Mures | 565.39 mi (909.90 km) |
| Trevignano to Odobesti | 720.82 mi (1,160.05 km) |
| Trevignano to Odorheiu Secuiesc | 634.18 mi (1,020.61 km) |
| Trevignano to Oltenita | 719.62 mi (1,158.11 km) |
| Trevignano to Onesti | 704.33 mi (1,133.51 km) |
| Trevignano to Oradea | 476.93 mi (767.54 km) |
| Trevignano to Orastie | 534.68 mi (860.48 km) |
| Trevignano to Oravita | 467.59 mi (752.52 km) |
| Trevignano to Orsova | 505.76 mi (813.94 km) |
| Trevignano to Otelu Rosu | 495.58 mi (797.56 km) |
| Trevignano to Otopeni | 685.12 mi (1,102.60 km) |
| Trevignano to Ovidiu | 809.31 mi (1,302.46 km) |
