| Seclin to Orthez | 519.44 mi (835.96 km) |
| Seclin to Orvault | 309.52 mi (498.13 km) |
| Seclin to Osny | 111.55 mi (179.53 km) |
| Seclin to Ostwald | 251.19 mi (404.25 km) |
| Seclin to Ouistreham | 170.52 mi (274.43 km) |
| Seclin to Oullins | 343.85 mi (553.37 km) |
| Seclin to Outreau | 63.83 mi (102.73 km) |
| Seclin to Oyonnax | 320.04 mi (515.06 km) |
| Seclin to Ozoir-la-Ferriere | 123.31 mi (198.45 km) |
| Seclin to Pace | 272.40 mi (438.39 km) |
| Seclin to Palaiseau | 131.47 mi (211.57 km) |
| Seclin to Pamiers | 517.83 mi (833.36 km) |
| Seclin to Panazol | 334.86 mi (538.91 km) |
| Seclin to Pantin | 117.51 mi (189.12 km) |
| Seclin to Paray-le-Monial | 287.44 mi (462.60 km) |
