| Peso da Regua to Oberkirch | 926.00 mi (1,490.26 km) |
| Peso da Regua to Obernburg am Main | 1,011.27 mi (1,627.48 km) |
| Peso da Regua to Obernkirchen | 1,103.42 mi (1,775.78 km) |
| Peso da Regua to Oberschleissheim | 1,064.44 mi (1,713.05 km) |
| Peso da Regua to Oberstdorf | 988.63 mi (1,591.04 km) |
| Peso da Regua to Obertraubling | 1,107.70 mi (1,782.67 km) |
| Peso da Regua to Obertshausen | 1,007.44 mi (1,621.33 km) |
| Peso da Regua to Oberursel | 1,002.76 mi (1,613.78 km) |
| Peso da Regua to Ochsenfurt | 1,041.21 mi (1,675.67 km) |
| Peso da Regua to Ochsenhausen | 990.45 mi (1,593.97 km) |
| Peso da Regua to Ochtrup | 1,037.68 mi (1,669.98 km) |
| Peso da Regua to Odenthal | 983.44 mi (1,582.70 km) |
| Peso da Regua to Oelde | 1,052.59 mi (1,693.97 km) |
| Peso da Regua to Oelsnitz | 1,148.28 mi (1,847.98 km) |
| Peso da Regua to Oer-Erkenschwick | 1,014.35 mi (1,632.44 km) |
