| San Giovanni Rotondo to Navodari | 674.65 mi (1,085.75 km) |
| San Giovanni Rotondo to Negresti-Oas | 568.59 mi (915.06 km) |
| San Giovanni Rotondo to Nehoiu | 586.05 mi (943.16 km) |
| San Giovanni Rotondo to Ocna Mures | 517.13 mi (832.24 km) |
| San Giovanni Rotondo to Odobesti | 630.95 mi (1,015.41 km) |
| San Giovanni Rotondo to Odorheiu Secuiesc | 571.85 mi (920.31 km) |
| San Giovanni Rotondo to Oltenita | 575.52 mi (926.22 km) |
| San Giovanni Rotondo to Onesti | 631.84 mi (1,016.84 km) |
| San Giovanni Rotondo to Oradea | 480.44 mi (773.19 km) |
| San Giovanni Rotondo to Orastie | 469.75 mi (755.98 km) |
| San Giovanni Rotondo to Oravita | 377.50 mi (607.52 km) |
| San Giovanni Rotondo to Orsova | 395.10 mi (635.86 km) |
| San Giovanni Rotondo to Otelu Rosu | 423.16 mi (681.02 km) |
| San Giovanni Rotondo to Otopeni | 556.73 mi (895.97 km) |
| San Giovanni Rotondo to Ovidiu | 671.39 mi (1,080.50 km) |
