| Citrus Heights to Oerlinghausen | 5,487.38 mi (8,831.09 km) |
| Citrus Heights to Oestrich-Winkel | 5,577.32 mi (8,975.83 km) |
| Citrus Heights to Offenburg | 5,659.32 mi (9,107.79 km) |
| Citrus Heights to Oftersheim | 5,627.73 mi (9,056.96 km) |
| Citrus Heights to Ohrdruf | 5,603.68 mi (9,018.25 km) |
| Citrus Heights to Ohringen | 5,661.96 mi (9,112.04 km) |
| Citrus Heights to Olbernhau | 5,678.06 mi (9,137.95 km) |
| Citrus Heights to Olching | 5,766.54 mi (9,280.34 km) |
| Citrus Heights to Oldenburg | 5,411.41 mi (8,708.82 km) |
| Citrus Heights to Oldenburg in Holstein | 5,413.48 mi (8,712.15 km) |
| Citrus Heights to Olfen | 5,467.34 mi (8,798.83 km) |
| Citrus Heights to Olpe | 5,517.36 mi (8,879.33 km) |
| Citrus Heights to Olsberg | 5,516.39 mi (8,877.77 km) |
| Citrus Heights to Oranienburg | 5,556.47 mi (8,942.28 km) |
| Citrus Heights to Ortenberg | 5,586.15 mi (8,990.04 km) |
