| San Marcos to Nasaud | 6,390.51 mi (10,284.52 km) |
| San Marcos to Navodari | 6,668.76 mi (10,732.34 km) |
| San Marcos to Negresti-Oas | 6,331.97 mi (10,190.32 km) |
| San Marcos to Nehoiu | 6,551.41 mi (10,543.48 km) |
| San Marcos to Ocna Mures | 6,429.53 mi (10,347.33 km) |
| San Marcos to Odobesti | 6,544.85 mi (10,532.93 km) |
| San Marcos to Odorheiu Secuiesc | 6,469.72 mi (10,412.01 km) |
| San Marcos to Oltenita | 6,635.38 mi (10,678.61 km) |
| San Marcos to Onesti | 6,508.25 mi (10,474.01 km) |
| San Marcos to Oradea | 6,340.40 mi (10,203.89 km) |
| San Marcos to Orastie | 6,444.35 mi (10,371.18 km) |
| San Marcos to Oravita | 6,451.41 mi (10,382.54 km) |
| San Marcos to Orsova | 6,488.69 mi (10,442.53 km) |
| San Marcos to Otelu Rosu | 6,441.56 mi (10,366.69 km) |
| San Marcos to Otopeni | 6,593.65 mi (10,611.45 km) |
