| Calverton to Nasaud | 4,763.78 mi (7,666.56 km) |
| Calverton to Navodari | 5,048.67 mi (8,125.05 km) |
| Calverton to Negresti-Oas | 4,703.05 mi (7,568.82 km) |
| Calverton to Nehoiu | 4,915.61 mi (7,910.91 km) |
| Calverton to Ocna Mures | 4,778.38 mi (7,690.06 km) |
| Calverton to Odobesti | 4,927.72 mi (7,930.39 km) |
| Calverton to Odorheiu Secuiesc | 4,837.27 mi (7,784.83 km) |
| Calverton to Oltenita | 4,981.54 mi (8,017.02 km) |
| Calverton to Onesti | 4,895.81 mi (7,879.04 km) |
| Calverton to Oradea | 4,676.04 mi (7,525.36 km) |
| Calverton to Orastie | 4,774.05 mi (7,683.10 km) |
| Calverton to Oravita | 4,745.68 mi (7,637.44 km) |
| Calverton to Orsova | 4,786.68 mi (7,703.42 km) |
| Calverton to Otelu Rosu | 4,753.62 mi (7,650.21 km) |
| Calverton to Otopeni | 4,939.86 mi (7,949.94 km) |
