| Penzance to Oberkirch | 622.14 mi (1,001.23 km) |
| Penzance to Obernburg am Main | 651.41 mi (1,048.35 km) |
| Penzance to Obernkirchen | 650.45 mi (1,046.80 km) |
| Penzance to Oberschleissheim | 781.35 mi (1,257.46 km) |
| Penzance to Oberstdorf | 742.68 mi (1,195.22 km) |
| Penzance to Obertraubling | 795.83 mi (1,280.76 km) |
| Penzance to Obertshausen | 636.01 mi (1,023.56 km) |
| Penzance to Oberursel | 623.82 mi (1,003.94 km) |
| Penzance to Ochsenfurt | 694.15 mi (1,117.12 km) |
| Penzance to Ochsenhausen | 713.33 mi (1,148.00 km) |
| Penzance to Ochtrup | 569.17 mi (915.99 km) |
| Penzance to Odenthal | 558.10 mi (898.17 km) |
| Penzance to Oelde | 606.15 mi (975.50 km) |
| Penzance to Oelsnitz | 780.29 mi (1,255.76 km) |
| Penzance to Oer-Erkenschwick | 566.54 mi (911.76 km) |
