| Adrian to Nasaud | 4,883.48 mi (7,859.20 km) |
| Adrian to Navodari | 5,171.19 mi (8,322.22 km) |
| Adrian to Negresti-Oas | 4,822.35 mi (7,760.82 km) |
| Adrian to Nehoiu | 5,040.25 mi (8,111.50 km) |
| Adrian to Ocna Mures | 4,905.05 mi (7,893.91 km) |
| Adrian to Odobesti | 5,047.48 mi (8,123.14 km) |
| Adrian to Odorheiu Secuiesc | 4,959.73 mi (7,981.92 km) |
| Adrian to Oltenita | 5,112.16 mi (8,227.22 km) |
| Adrian to Onesti | 5,013.78 mi (8,068.90 km) |
| Adrian to Oradea | 4,804.76 mi (7,732.52 km) |
| Adrian to Orastie | 4,905.99 mi (7,895.42 km) |
| Adrian to Oravita | 4,887.18 mi (7,865.15 km) |
| Adrian to Orsova | 4,927.74 mi (7,930.42 km) |
| Adrian to Otelu Rosu | 4,890.19 mi (7,870.01 km) |
| Adrian to Otopeni | 5,069.81 mi (8,159.07 km) |
