| Nelas to Orbetello | 993.54 mi (1,598.94 km) |
| Nelas to Oria | 1,334.00 mi (2,146.86 km) |
| Nelas to Oristano | 867.30 mi (1,395.79 km) |
| Nelas to Orta Nova | 1,227.54 mi (1,975.54 km) |
| Nelas to Orte | 1,053.38 mi (1,695.26 km) |
| Nelas to Ortona | 1,156.17 mi (1,860.68 km) |
| Nelas to Orvieto | 1,039.69 mi (1,673.21 km) |
| Nelas to Orzinuovi | 957.95 mi (1,541.67 km) |
| Nelas to Osimo | 1,111.18 mi (1,788.27 km) |
| Nelas to Ospitaletto | 967.20 mi (1,556.57 km) |
| Nelas to Ostuni | 1,329.14 mi (2,139.04 km) |
| Nelas to Ottaviano | 1,166.90 mi (1,877.95 km) |
| Nelas to Ovada | 884.44 mi (1,423.37 km) |
| Nelas to Ozieri | 883.44 mi (1,421.76 km) |
| Nelas to Paceco | 1,102.90 mi (1,774.94 km) |
