| Port Huron to Trezzo sull'Adda | 4,282.82 mi (6,892.53 km) |
| Port Huron to Tricase | 4,876.74 mi (7,848.35 km) |
| Port Huron to Trieste | 4,449.05 mi (7,160.05 km) |
| Port Huron to Triggiano | 4,768.07 mi (7,673.47 km) |
| Port Huron to Trinitapoli | 4,722.79 mi (7,600.59 km) |
| Port Huron to Trissino | 4,358.00 mi (7,013.52 km) |
| Port Huron to Triuggio | 4,270.44 mi (6,872.61 km) |
| Port Huron to Trofarello | 4,234.67 mi (6,815.04 km) |
| Port Huron to Troina | 4,816.15 mi (7,750.85 km) |
| Port Huron to Turin | 4,228.69 mi (6,805.42 km) |
| Port Huron to Udine | 4,411.23 mi (7,099.18 km) |
| Port Huron to Ugento | 4,868.66 mi (7,835.35 km) |
| Port Huron to Umbertide | 4,488.19 mi (7,223.04 km) |
| Port Huron to Urbino | 4,483.00 mi (7,214.69 km) |
| Port Huron to Urgnano | 4,290.27 mi (6,904.53 km) |
