| Redwood City to Oerlinghausen | 5,584.09 mi (8,986.72 km) |
| Redwood City to Oestrich-Winkel | 5,674.15 mi (9,131.66 km) |
| Redwood City to Offenburg | 5,756.18 mi (9,263.67 km) |
| Redwood City to Oftersheim | 5,724.56 mi (9,212.79 km) |
| Redwood City to Ohrdruf | 5,700.35 mi (9,173.83 km) |
| Redwood City to Ohringen | 5,758.76 mi (9,267.83 km) |
| Redwood City to Olbernhau | 5,774.57 mi (9,293.26 km) |
| Redwood City to Olching | 5,863.32 mi (9,436.10 km) |
| Redwood City to Oldenburg | 5,508.06 mi (8,864.36 km) |
| Redwood City to Oldenburg in Holstein | 5,509.85 mi (8,867.25 km) |
| Redwood City to Olfen | 5,564.11 mi (8,954.57 km) |
| Redwood City to Olpe | 5,614.15 mi (9,035.10 km) |
| Redwood City to Olsberg | 5,613.14 mi (9,033.47 km) |
| Redwood City to Oranienburg | 5,652.80 mi (9,097.30 km) |
| Redwood City to Ortenberg | 5,682.93 mi (9,145.79 km) |
