| Sulphur to Nasaud | 5,834.34 mi (9,389.46 km) |
| Sulphur to Navodari | 6,121.58 mi (9,851.73 km) |
| Sulphur to Negresti-Oas | 5,773.25 mi (9,291.14 km) |
| Sulphur to Nehoiu | 5,989.84 mi (9,639.72 km) |
| Sulphur to Ocna Mures | 5,853.83 mi (9,420.83 km) |
| Sulphur to Odobesti | 5,998.52 mi (9,653.68 km) |
| Sulphur to Odorheiu Secuiesc | 5,909.88 mi (9,511.04 km) |
| Sulphur to Oltenita | 6,059.89 mi (9,752.45 km) |
| Sulphur to Onesti | 5,965.27 mi (9,600.18 km) |
| Sulphur to Oradea | 5,752.74 mi (9,258.15 km) |
| Sulphur to Orastie | 5,853.00 mi (9,419.49 km) |
| Sulphur to Oravita | 5,830.53 mi (9,383.34 km) |
| Sulphur to Orsova | 5,871.32 mi (9,448.98 km) |
| Sulphur to Otelu Rosu | 5,835.49 mi (9,391.31 km) |
| Sulphur to Otopeni | 6,017.72 mi (9,684.58 km) |
