| Guyancourt to Obernburg am Main | 326.71 mi (525.78 km) |
| Guyancourt to Obernkirchen | 392.22 mi (631.22 km) |
| Guyancourt to Oberschleissheim | 435.72 mi (701.22 km) |
| Guyancourt to Oberstdorf | 389.98 mi (627.62 km) |
| Guyancourt to Obertraubling | 458.57 mi (738.00 km) |
| Guyancourt to Obertshausen | 316.59 mi (509.50 km) |
| Guyancourt to Oberursel | 308.07 mi (495.79 km) |
| Guyancourt to Ochsenfurt | 365.66 mi (588.48 km) |
| Guyancourt to Ochsenhausen | 364.11 mi (585.97 km) |
| Guyancourt to Ochtrup | 326.78 mi (525.90 km) |
| Guyancourt to Odenthal | 273.37 mi (439.95 km) |
| Guyancourt to Oelde | 341.37 mi (549.38 km) |
| Guyancourt to Oelsnitz | 465.69 mi (749.45 km) |
| Guyancourt to Oer-Erkenschwick | 302.77 mi (487.27 km) |
| Guyancourt to Oerlinghausen | 364.67 mi (586.88 km) |
