| Sint-Gillis-Waas to Obernburg am Main | 240.26 mi (386.66 km) |
| Sint-Gillis-Waas to Obernkirchen | 225.87 mi (363.50 km) |
| Sint-Gillis-Waas to Oberschleissheim | 390.50 mi (628.45 km) |
| Sint-Gillis-Waas to Oberstdorf | 382.17 mi (615.04 km) |
| Sint-Gillis-Waas to Obertraubling | 389.00 mi (626.03 km) |
| Sint-Gillis-Waas to Obertshausen | 221.36 mi (356.25 km) |
| Sint-Gillis-Waas to Oberursel | 207.29 mi (333.60 km) |
| Sint-Gillis-Waas to Ochsenfurt | 283.25 mi (455.85 km) |
| Sint-Gillis-Waas to Ochsenhausen | 339.34 mi (546.11 km) |
| Sint-Gillis-Waas to Ochtrup | 148.25 mi (238.59 km) |
| Sint-Gillis-Waas to Odenthal | 130.70 mi (210.34 km) |
| Sint-Gillis-Waas to Oelde | 178.51 mi (287.29 km) |
| Sint-Gillis-Waas to Oelsnitz | 355.54 mi (572.19 km) |
| Sint-Gillis-Waas to Oer-Erkenschwick | 138.16 mi (222.35 km) |
| Sint-Gillis-Waas to Oerlinghausen | 202.03 mi (325.13 km) |
