| Tallaght to Tricase | 1,479.87 mi (2,381.61 km) |
| Tallaght to Trieste | 1,041.26 mi (1,675.75 km) |
| Tallaght to Triggiano | 1,370.62 mi (2,205.80 km) |
| Tallaght to Trinitapoli | 1,327.04 mi (2,135.67 km) |
| Tallaght to Trissino | 954.59 mi (1,536.26 km) |
| Tallaght to Triuggio | 873.97 mi (1,406.52 km) |
| Tallaght to Trofarello | 854.57 mi (1,375.30 km) |
| Tallaght to Troina | 1,464.47 mi (2,356.83 km) |
| Tallaght to Turin | 847.81 mi (1,364.43 km) |
| Tallaght to Udine | 1,003.27 mi (1,614.61 km) |
| Tallaght to Ugento | 1,472.62 mi (2,369.96 km) |
| Tallaght to Umbertide | 1,096.30 mi (1,764.32 km) |
| Tallaght to Urbino | 1,086.39 mi (1,748.38 km) |
| Tallaght to Urgnano | 892.48 mi (1,436.30 km) |
| Tallaght to Usmate Velate | 877.71 mi (1,412.54 km) |
