| Waterville to Nasaud | 4,231.62 mi (6,810.13 km) |
| Waterville to Navodari | 4,516.87 mi (7,269.20 km) |
| Waterville to Negresti-Oas | 4,170.83 mi (6,712.30 km) |
| Waterville to Nehoiu | 4,383.95 mi (7,055.28 km) |
| Waterville to Ocna Mures | 4,246.85 mi (6,834.64 km) |
| Waterville to Odobesti | 4,395.63 mi (7,074.08 km) |
| Waterville to Odorheiu Secuiesc | 4,305.37 mi (6,928.82 km) |
| Waterville to Oltenita | 4,450.56 mi (7,162.49 km) |
| Waterville to Onesti | 4,363.57 mi (7,022.49 km) |
| Waterville to Oradea | 4,144.67 mi (6,670.20 km) |
| Waterville to Orastie | 4,243.11 mi (6,828.62 km) |
| Waterville to Oravita | 4,216.05 mi (6,785.07 km) |
| Waterville to Orsova | 4,257.01 mi (6,850.99 km) |
| Waterville to Otelu Rosu | 4,223.26 mi (6,796.69 km) |
| Waterville to Otopeni | 4,408.78 mi (7,095.24 km) |
