| Webster Groves to Nasaud | 5,274.63 mi (8,488.70 km) |
| Webster Groves to Navodari | 5,562.53 mi (8,952.03 km) |
| Webster Groves to Negresti-Oas | 5,213.51 mi (8,390.34 km) |
| Webster Groves to Nehoiu | 5,432.32 mi (8,742.47 km) |
| Webster Groves to Ocna Mures | 5,297.81 mi (8,526.00 km) |
| Webster Groves to Odobesti | 5,438.36 mi (8,752.20 km) |
| Webster Groves to Odorheiu Secuiesc | 5,351.42 mi (8,612.28 km) |
| Webster Groves to Oltenita | 5,505.48 mi (8,860.22 km) |
| Webster Groves to Onesti | 5,404.28 mi (8,697.34 km) |
| Webster Groves to Oradea | 5,198.15 mi (8,365.61 km) |
| Webster Groves to Orastie | 5,299.92 mi (8,529.39 km) |
| Webster Groves to Oravita | 5,283.10 mi (8,502.33 km) |
| Webster Groves to Orsova | 5,323.52 mi (8,567.37 km) |
| Webster Groves to Otelu Rosu | 5,285.13 mi (8,505.59 km) |
| Webster Groves to Otopeni | 5,463.05 mi (8,791.93 km) |
