| Santa Ursula to Oberkirch | 1,906.19 mi (3,067.71 km) |
| Santa Ursula to Obernburg am Main | 1,999.43 mi (3,217.77 km) |
| Santa Ursula to Obernkirchen | 2,106.04 mi (3,389.34 km) |
| Santa Ursula to Oberschleissheim | 2,025.74 mi (3,260.11 km) |
| Santa Ursula to Oberstdorf | 1,944.14 mi (3,128.80 km) |
| Santa Ursula to Obertraubling | 2,075.42 mi (3,340.07 km) |
| Santa Ursula to Obertshausen | 1,998.48 mi (3,216.24 km) |
| Santa Ursula to Oberursel | 1,995.65 mi (3,211.69 km) |
| Santa Ursula to Ochsenfurt | 2,024.31 mi (3,257.81 km) |
| Santa Ursula to Ochsenhausen | 1,956.67 mi (3,148.96 km) |
| Santa Ursula to Ochtrup | 2,043.41 mi (3,288.55 km) |
| Santa Ursula to Odenthal | 1,985.27 mi (3,194.98 km) |
| Santa Ursula to Oelde | 2,055.45 mi (3,307.92 km) |
| Santa Ursula to Oelsnitz | 2,130.93 mi (3,429.39 km) |
| Santa Ursula to Oer-Erkenschwick | 2,018.28 mi (3,248.11 km) |
