| Tallaght to Navodari | 1,687.07 mi (2,715.08 km) |
| Tallaght to Negresti-Oas | 1,348.19 mi (2,169.70 km) |
| Tallaght to Nehoiu | 1,553.41 mi (2,499.96 km) |
| Tallaght to Ocna Mures | 1,415.69 mi (2,278.34 km) |
| Tallaght to Odobesti | 1,569.53 mi (2,525.91 km) |
| Tallaght to Odorheiu Secuiesc | 1,477.51 mi (2,377.82 km) |
| Tallaght to Oltenita | 1,615.49 mi (2,599.89 km) |
| Tallaght to Onesti | 1,539.78 mi (2,478.04 km) |
| Tallaght to Oradea | 1,312.62 mi (2,112.46 km) |
| Tallaght to Orastie | 1,408.19 mi (2,266.26 km) |
| Tallaght to Oravita | 1,377.54 mi (2,216.94 km) |
| Tallaght to Orsova | 1,418.54 mi (2,282.92 km) |
| Tallaght to Otelu Rosu | 1,386.11 mi (2,230.72 km) |
| Tallaght to Otopeni | 1,574.27 mi (2,533.55 km) |
| Tallaght to Ovidiu | 1,686.87 mi (2,714.75 km) |
