| North Potomac to Trezzo sull'Adda | 4,230.40 mi (6,808.16 km) |
| North Potomac to Tricase | 4,816.90 mi (7,752.05 km) |
| North Potomac to Trieste | 4,408.60 mi (7,094.96 km) |
| North Potomac to Triggiano | 4,709.94 mi (7,579.92 km) |
| North Potomac to Trinitapoli | 4,663.71 mi (7,505.51 km) |
| North Potomac to Trissino | 4,310.34 mi (6,936.83 km) |
| North Potomac to Triuggio | 4,217.71 mi (6,787.75 km) |
| North Potomac to Trofarello | 4,173.40 mi (6,716.44 km) |
| North Potomac to Troina | 4,732.06 mi (7,615.51 km) |
| North Potomac to Turin | 4,167.89 mi (6,707.56 km) |
| North Potomac to Udine | 4,371.86 mi (7,035.83 km) |
| North Potomac to Ugento | 4,808.17 mi (7,738.00 km) |
| North Potomac to Umbertide | 4,429.24 mi (7,128.17 km) |
| North Potomac to Urbino | 4,427.53 mi (7,125.41 km) |
| North Potomac to Urgnano | 4,238.25 mi (6,820.80 km) |
