| Viterbo to Rivalta di Torino | 291.61 mi (469.30 km) |
| Viterbo to Rivarolo Canavese | 296.97 mi (477.93 km) |
| Viterbo to Rivoli | 293.11 mi (471.72 km) |
| Viterbo to Rocca di Papa | 54.91 mi (88.37 km) |
| Viterbo to Rocca Priora | 55.50 mi (89.32 km) |
| Viterbo to Roccapiemonte | 176.07 mi (283.36 km) |
| Viterbo to Roccastrada | 62.65 mi (100.83 km) |
| Viterbo to Romano di Lombardia | 243.95 mi (392.60 km) |
| Viterbo to Rome | 41.16 mi (66.24 km) |
| Viterbo to Roncade | 221.93 mi (357.16 km) |
| Viterbo to Ronchi dei Legionari | 245.87 mi (395.69 km) |
| Viterbo to Ronciglione | 10.56 mi (17.00 km) |
| Viterbo to Rosa | 228.49 mi (367.72 km) |
| Viterbo to Rosarno | 339.60 mi (546.53 km) |
| Viterbo to Rosignano Marittimo | 107.07 mi (172.31 km) |
