| Willebroek to Orvault | 376.54 mi (605.99 km) |
| Willebroek to Osny | 172.27 mi (277.24 km) |
| Willebroek to Ostwald | 229.04 mi (368.60 km) |
| Willebroek to Ouistreham | 238.98 mi (384.60 km) |
| Willebroek to Oullins | 370.32 mi (595.97 km) |
| Willebroek to Outreau | 123.43 mi (198.64 km) |
| Willebroek to Oyonnax | 337.53 mi (543.20 km) |
| Willebroek to Ozoir-la-Ferriere | 175.02 mi (281.67 km) |
| Willebroek to Pace | 340.79 mi (548.45 km) |
| Willebroek to Palaiseau | 187.94 mi (302.45 km) |
| Willebroek to Pamiers | 564.29 mi (908.14 km) |
| Willebroek to Panazol | 387.33 mi (623.34 km) |
| Willebroek to Pantin | 173.49 mi (279.20 km) |
| Willebroek to Paray-le-Monial | 319.11 mi (513.55 km) |
| Willebroek to Parempuyre | 480.85 mi (773.86 km) |
