| Viterbo to Trim | 1,157.80 mi (1,863.30 km) |
| Viterbo to Tuam | 1,228.02 mi (1,976.30 km) |
| Viterbo to Tullamore | 1,171.46 mi (1,885.29 km) |
| Viterbo to Waterford | 1,122.45 mi (1,806.42 km) |
| Viterbo to Wexford | 1,100.67 mi (1,771.36 km) |
| Viterbo to Wicklow | 1,109.53 mi (1,785.62 km) |
| Viterbo to Abano Terme | 203.85 mi (328.07 km) |
| Viterbo to Abbiategrasso | 259.97 mi (418.38 km) |
| Viterbo to Acate | 393.08 mi (632.60 km) |
| Viterbo to Acerra | 154.67 mi (248.92 km) |
| Viterbo to Aci Castello | 372.52 mi (599.52 km) |
| Viterbo to Aci Catena | 369.45 mi (594.57 km) |
| Viterbo to Aci Sant'Antonio | 369.07 mi (593.96 km) |
| Viterbo to Acireale | 369.17 mi (594.12 km) |
| Viterbo to Acquaviva delle Fonti | 266.45 mi (428.82 km) |
