| Valley Center to Oerlinghausen | 5,698.03 mi (9,170.10 km) |
| Valley Center to Oestrich-Winkel | 5,776.81 mi (9,296.87 km) |
| Valley Center to Offenburg | 5,851.52 mi (9,417.11 km) |
| Valley Center to Oftersheim | 5,826.37 mi (9,376.64 km) |
| Valley Center to Ohrdruf | 5,816.19 mi (9,360.26 km) |
| Valley Center to Ohringen | 5,863.04 mi (9,435.65 km) |
| Valley Center to Olbernhau | 5,898.80 mi (9,493.20 km) |
| Valley Center to Olching | 5,969.75 mi (9,607.39 km) |
| Valley Center to Oldenburg | 5,625.93 mi (9,054.06 km) |
| Valley Center to Oldenburg in Holstein | 5,641.43 mi (9,079.00 km) |
| Valley Center to Olfen | 5,672.66 mi (9,129.26 km) |
| Valley Center to Olpe | 5,720.94 mi (9,206.97 km) |
| Valley Center to Olsberg | 5,723.65 mi (9,211.33 km) |
| Valley Center to Oranienburg | 5,785.42 mi (9,310.73 km) |
| Valley Center to Ortenberg | 5,790.86 mi (9,319.49 km) |
