| Viterbo to Orthez | 654.60 mi (1,053.48 km) |
| Viterbo to Orvault | 749.98 mi (1,206.98 km) |
| Viterbo to Osny | 666.03 mi (1,071.87 km) |
| Viterbo to Ostwald | 473.90 mi (762.67 km) |
| Viterbo to Ouistreham | 759.08 mi (1,221.63 km) |
| Viterbo to Oullins | 427.60 mi (688.16 km) |
| Viterbo to Outreau | 758.13 mi (1,220.10 km) |
| Viterbo to Oyonnax | 414.32 mi (666.78 km) |
| Viterbo to Ozoir-la-Ferriere | 632.07 mi (1,017.22 km) |
| Viterbo to Pace | 780.52 mi (1,256.13 km) |
| Viterbo to Palaiseau | 644.51 mi (1,037.25 km) |
| Viterbo to Pamiers | 534.08 mi (859.51 km) |
| Viterbo to Panazol | 584.53 mi (940.72 km) |
| Viterbo to Pantin | 647.03 mi (1,041.29 km) |
| Viterbo to Paray-le-Monial | 482.12 mi (775.90 km) |
