| Ponte da Barca to Oberkirch | 925.88 mi (1,490.05 km) |
| Ponte da Barca to Obernburg am Main | 1,007.77 mi (1,621.86 km) |
| Ponte da Barca to Obernkirchen | 1,092.47 mi (1,758.16 km) |
| Ponte da Barca to Oberschleissheim | 1,068.69 mi (1,719.88 km) |
| Ponte da Barca to Oberstdorf | 994.84 mi (1,601.03 km) |
| Ponte da Barca to Obertraubling | 1,110.03 mi (1,786.42 km) |
| Ponte da Barca to Obertshausen | 1,002.83 mi (1,613.90 km) |
| Ponte da Barca to Oberursel | 997.38 mi (1,605.12 km) |
| Ponte da Barca to Ochsenfurt | 1,039.37 mi (1,672.71 km) |
| Ponte da Barca to Ochsenhausen | 993.97 mi (1,599.63 km) |
| Ponte da Barca to Ochtrup | 1,024.34 mi (1,648.52 km) |
| Ponte da Barca to Odenthal | 973.44 mi (1,566.60 km) |
| Ponte da Barca to Oelde | 1,041.62 mi (1,676.33 km) |
| Ponte da Barca to Oelsnitz | 1,146.04 mi (1,844.37 km) |
| Ponte da Barca to Oer-Erkenschwick | 1,002.71 mi (1,613.70 km) |
