| Silver Spring to Nasaud | 4,769.20 mi (7,675.28 km) |
| Silver Spring to Navodari | 5,054.09 mi (8,133.77 km) |
| Silver Spring to Negresti-Oas | 4,708.46 mi (7,577.54 km) |
| Silver Spring to Nehoiu | 4,921.02 mi (7,919.62 km) |
| Silver Spring to Ocna Mures | 4,783.79 mi (7,698.77 km) |
| Silver Spring to Odobesti | 4,933.13 mi (7,939.11 km) |
| Silver Spring to Odorheiu Secuiesc | 4,842.68 mi (7,793.54 km) |
| Silver Spring to Oltenita | 4,986.96 mi (8,025.73 km) |
| Silver Spring to Onesti | 4,901.22 mi (7,887.76 km) |
| Silver Spring to Oradea | 4,681.46 mi (7,534.08 km) |
| Silver Spring to Orastie | 4,779.47 mi (7,691.81 km) |
| Silver Spring to Oravita | 4,751.09 mi (7,646.14 km) |
| Silver Spring to Orsova | 4,792.09 mi (7,712.12 km) |
| Silver Spring to Otelu Rosu | 4,759.03 mi (7,658.92 km) |
| Silver Spring to Otopeni | 4,945.27 mi (7,958.65 km) |
