| Mariehamn to Traversetolo | 1,138.93 mi (1,832.93 km) |
| Mariehamn to Trebaseleghe | 1,053.82 mi (1,695.96 km) |
| Mariehamn to Trebisacce | 1,405.67 mi (2,262.21 km) |
| Mariehamn to Trecastagni | 1,568.02 mi (2,523.48 km) |
| Mariehamn to Trecate | 1,112.78 mi (1,790.84 km) |
| Mariehamn to Treia | 1,192.68 mi (1,919.43 km) |
| Mariehamn to Trento | 1,034.22 mi (1,664.41 km) |
| Mariehamn to Trentola | 1,344.07 mi (2,163.07 km) |
| Mariehamn to Trepuzzi | 1,363.50 mi (2,194.34 km) |
| Mariehamn to Trescore Balneario | 1,077.22 mi (1,733.62 km) |
| Mariehamn to Treviglio | 1,092.94 mi (1,758.92 km) |
| Mariehamn to Trevignano | 1,043.25 mi (1,678.94 km) |
| Mariehamn to Treviso | 1,045.49 mi (1,682.56 km) |
| Mariehamn to Trezzano sul Naviglio | 1,107.20 mi (1,781.87 km) |
| Mariehamn to Trezzo sull'Adda | 1,088.40 mi (1,751.61 km) |
