| Redding to Oerlinghausen | 5,400.94 mi (8,691.97 km) |
| Redding to Oestrich-Winkel | 5,493.93 mi (8,841.62 km) |
| Redding to Offenburg | 5,577.87 mi (8,976.71 km) |
| Redding to Oftersheim | 5,544.49 mi (8,922.99 km) |
| Redding to Ohrdruf | 5,516.49 mi (8,877.93 km) |
| Redding to Ohringen | 5,577.94 mi (8,976.82 km) |
| Redding to Olbernhau | 5,588.38 mi (8,993.63 km) |
| Redding to Olching | 5,681.70 mi (9,143.82 km) |
| Redding to Oldenburg | 5,323.99 mi (8,568.14 km) |
| Redding to Oldenburg in Holstein | 5,322.22 mi (8,565.29 km) |
| Redding to Olfen | 5,382.47 mi (8,662.24 km) |
| Redding to Olpe | 5,432.90 mi (8,743.40 km) |
| Redding to Olsberg | 5,430.87 mi (8,740.14 km) |
| Redding to Oranienburg | 5,464.68 mi (8,794.55 km) |
| Redding to Ortenberg | 5,501.23 mi (8,853.38 km) |
