| Pornichet to Orthez | 271.88 mi (437.55 km) |
| Pornichet to Orvault | 33.64 mi (54.14 km) |
| Pornichet to Osny | 237.68 mi (382.52 km) |
| Pornichet to Ostwald | 473.65 mi (762.27 km) |
| Pornichet to Ouistreham | 168.85 mi (271.75 km) |
| Pornichet to Oullins | 356.37 mi (573.52 km) |
| Pornichet to Outreau | 296.97 mi (477.93 km) |
| Pornichet to Oyonnax | 384.64 mi (619.02 km) |
| Pornichet to Ozoir-la-Ferriere | 254.36 mi (409.36 km) |
| Pornichet to Pace | 66.38 mi (106.83 km) |
| Pornichet to Palaiseau | 234.43 mi (377.28 km) |
| Pornichet to Pamiers | 345.15 mi (555.47 km) |
| Pornichet to Panazol | 199.46 mi (321.00 km) |
| Pornichet to Pantin | 246.11 mi (396.08 km) |
| Pornichet to Paray-le-Monial | 310.23 mi (499.27 km) |
