| Ponta Delgada to Oberkirch | 1,838.88 mi (2,959.40 km) |
| Ponta Delgada to Obernburg am Main | 1,904.35 mi (3,064.75 km) |
| Ponta Delgada to Obernkirchen | 1,946.50 mi (3,132.58 km) |
| Ponta Delgada to Oberschleissheim | 1,993.42 mi (3,208.10 km) |
| Ponta Delgada to Oberstdorf | 1,926.89 mi (3,101.02 km) |
| Ponta Delgada to Obertraubling | 2,027.27 mi (3,262.58 km) |
| Ponta Delgada to Obertshausen | 1,894.54 mi (3,048.97 km) |
| Ponta Delgada to Oberursel | 1,885.74 mi (3,034.80 km) |
| Ponta Delgada to Ochsenfurt | 1,942.02 mi (3,125.38 km) |
| Ponta Delgada to Ochsenhausen | 1,917.84 mi (3,086.47 km) |
| Ponta Delgada to Ochtrup | 1,867.70 mi (3,005.78 km) |
| Ponta Delgada to Odenthal | 1,839.41 mi (2,960.25 km) |
| Ponta Delgada to Oelde | 1,898.34 mi (3,055.08 km) |
| Ponta Delgada to Oelsnitz | 2,043.63 mi (3,288.90 km) |
| Ponta Delgada to Oer-Erkenschwick | 1,857.67 mi (2,989.63 km) |
