| Derry to Trezzo sull'Adda | 982.39 mi (1,581.00 km) |
| Derry to Tricase | 1,572.73 mi (2,531.07 km) |
| Derry to Trieste | 1,126.01 mi (1,812.13 km) |
| Derry to Triggiano | 1,463.73 mi (2,355.65 km) |
| Derry to Trinitapoli | 1,421.24 mi (2,287.26 km) |
| Derry to Trissino | 1,046.23 mi (1,683.75 km) |
| Derry to Triuggio | 971.17 mi (1,562.95 km) |
| Derry to Trofarello | 958.73 mi (1,542.92 km) |
| Derry to Troina | 1,569.92 mi (2,526.54 km) |
| Derry to Turin | 951.80 mi (1,531.78 km) |
| Derry to Udine | 1,087.53 mi (1,750.21 km) |
| Derry to Ugento | 1,565.93 mi (2,520.12 km) |
| Derry to Umbertide | 1,193.77 mi (1,921.20 km) |
| Derry to Urbino | 1,181.69 mi (1,901.75 km) |
| Derry to Urgnano | 988.72 mi (1,591.20 km) |
