| Speyer to Oberkirch | 56.56 mi (91.03 km) |
| Speyer to Obernburg am Main | 48.02 mi (77.29 km) |
| Speyer to Obernkirchen | 205.81 mi (331.22 km) |
| Speyer to Oberschleissheim | 160.72 mi (258.65 km) |
| Speyer to Oberstdorf | 156.86 mi (252.44 km) |
| Speyer to Obertraubling | 170.60 mi (274.55 km) |
| Speyer to Obertshausen | 54.67 mi (87.99 km) |
| Speyer to Oberursel | 61.42 mi (98.84 km) |
| Speyer to Ochsenfurt | 76.89 mi (123.74 km) |
| Speyer to Ochsenhausen | 110.50 mi (177.84 km) |
| Speyer to Ochtrup | 206.65 mi (332.57 km) |
| Speyer to Odenthal | 131.93 mi (212.31 km) |
| Speyer to Oelde | 174.13 mi (280.24 km) |
| Speyer to Oelsnitz | 182.80 mi (294.18 km) |
| Speyer to Oer-Erkenschwick | 168.67 mi (271.44 km) |
