| Sierra Vista Southeast to Oberkirch | 5,729.45 mi (9,220.66 km) |
| Sierra Vista Southeast to Obernburg am Main | 5,706.07 mi (9,183.04 km) |
| Sierra Vista Southeast to Obernkirchen | 5,594.67 mi (9,003.76 km) |
| Sierra Vista Southeast to Oberschleissheim | 5,861.24 mi (9,432.75 km) |
| Sierra Vista Southeast to Oberstdorf | 5,856.94 mi (9,425.83 km) |
| Sierra Vista Southeast to Obertraubling | 5,847.12 mi (9,410.04 km) |
| Sierra Vista Southeast to Obertshausen | 5,685.45 mi (9,149.84 km) |
| Sierra Vista Southeast to Oberursel | 5,670.68 mi (9,126.08 km) |
| Sierra Vista Southeast to Ochsenfurt | 5,745.63 mi (9,246.70 km) |
| Sierra Vista Southeast to Ochsenhausen | 5,814.76 mi (9,357.95 km) |
| Sierra Vista Southeast to Ochtrup | 5,535.34 mi (8,908.27 km) |
| Sierra Vista Southeast to Odenthal | 5,584.77 mi (8,987.82 km) |
| Sierra Vista Southeast to Oelde | 5,583.12 mi (8,985.16 km) |
| Sierra Vista Southeast to Oelsnitz | 5,777.99 mi (9,298.78 km) |
| Sierra Vista Southeast to Oer-Erkenschwick | 5,562.24 mi (8,951.57 km) |
