| Outreau to Oestrich-Winkel | 286.48 mi (461.05 km) |
| Outreau to Offenburg | 323.16 mi (520.07 km) |
| Outreau to Oftersheim | 323.48 mi (520.59 km) |
| Outreau to Ohrdruf | 399.21 mi (642.47 km) |
| Outreau to Ohringen | 366.31 mi (589.52 km) |
| Outreau to Olbernhau | 513.37 mi (826.19 km) |
| Outreau to Olching | 469.29 mi (755.24 km) |
| Outreau to Oldenburg | 328.43 mi (528.56 km) |
| Outreau to Oldenburg in Holstein | 462.46 mi (744.26 km) |
| Outreau to Olfen | 260.10 mi (418.59 km) |
| Outreau to Olpe | 272.89 mi (439.18 km) |
| Outreau to Olsberg | 302.58 mi (486.96 km) |
| Outreau to Oranienburg | 517.35 mi (832.60 km) |
| Outreau to Ortenberg | 328.45 mi (528.59 km) |
| Outreau to Oschatz | 501.77 mi (807.52 km) |
