| Citrus Heights to Oberkirch | 5,659.86 mi (9,108.67 km) |
| Citrus Heights to Obernburg am Main | 5,616.91 mi (9,039.55 km) |
| Citrus Heights to Obernkirchen | 5,482.53 mi (8,823.28 km) |
| Citrus Heights to Oberschleissheim | 5,770.35 mi (9,286.49 km) |
| Citrus Heights to Oberstdorf | 5,782.84 mi (9,306.58 km) |
| Citrus Heights to Obertraubling | 5,745.55 mi (9,246.57 km) |
| Citrus Heights to Obertshausen | 5,596.16 mi (9,006.15 km) |
| Citrus Heights to Oberursel | 5,581.77 mi (8,982.99 km) |
| Citrus Heights to Ochsenfurt | 5,652.09 mi (9,096.16 km) |
| Citrus Heights to Ochsenhausen | 5,736.79 mi (9,232.48 km) |
| Citrus Heights to Ochtrup | 5,435.77 mi (8,748.03 km) |
| Citrus Heights to Odenthal | 5,497.20 mi (8,846.88 km) |
| Citrus Heights to Oelde | 5,481.22 mi (8,821.17 km) |
| Citrus Heights to Oelsnitz | 5,663.27 mi (9,114.16 km) |
| Citrus Heights to Oer-Erkenschwick | 5,467.85 mi (8,799.65 km) |
