| Sarpsborg to Navodari | 1,267.62 mi (2,040.04 km) |
| Sarpsborg to Negresti-Oas | 933.37 mi (1,502.11 km) |
| Sarpsborg to Nehoiu | 1,150.94 mi (1,852.26 km) |
| Sarpsborg to Ocna Mures | 1,033.83 mi (1,663.79 km) |
| Sarpsborg to Odobesti | 1,143.55 mi (1,840.37 km) |
| Sarpsborg to Odorheiu Secuiesc | 1,069.67 mi (1,721.47 km) |
| Sarpsborg to Oltenita | 1,236.24 mi (1,989.54 km) |
| Sarpsborg to Onesti | 1,106.96 mi (1,781.48 km) |
| Sarpsborg to Oradea | 952.50 mi (1,532.90 km) |
| Sarpsborg to Orastie | 1,054.35 mi (1,696.81 km) |
| Sarpsborg to Oravita | 1,078.45 mi (1,735.59 km) |
| Sarpsborg to Orsova | 1,111.14 mi (1,788.20 km) |
| Sarpsborg to Otelu Rosu | 1,059.41 mi (1,704.95 km) |
| Sarpsborg to Otopeni | 1,195.12 mi (1,923.36 km) |
| Sarpsborg to Ovidiu | 1,269.42 mi (2,042.94 km) |
