| Portici to Orthez | 794.49 mi (1,278.61 km) |
| Portici to Orvault | 907.07 mi (1,459.78 km) |
| Portici to Osny | 825.56 mi (1,328.61 km) |
| Portici to Ostwald | 625.03 mi (1,005.88 km) |
| Portici to Ouistreham | 918.93 mi (1,478.87 km) |
| Portici to Oullins | 586.23 mi (943.44 km) |
| Portici to Outreau | 916.10 mi (1,474.32 km) |
| Portici to Oyonnax | 574.15 mi (924.00 km) |
| Portici to Ozoir-la-Ferriere | 791.56 mi (1,273.89 km) |
| Portici to Pace | 939.15 mi (1,511.42 km) |
| Portici to Palaiseau | 804.20 mi (1,294.24 km) |
| Portici to Pamiers | 672.23 mi (1,081.85 km) |
| Portici to Panazol | 739.82 mi (1,190.63 km) |
| Portici to Pantin | 806.54 mi (1,298.00 km) |
| Portici to Paray-le-Monial | 641.52 mi (1,032.43 km) |
