| Santa Clara to Oerlinghausen | 5,585.81 mi (8,989.50 km) |
| Santa Clara to Oestrich-Winkel | 5,675.41 mi (9,133.69 km) |
| Santa Clara to Offenburg | 5,757.15 mi (9,265.24 km) |
| Santa Clara to Oftersheim | 5,725.80 mi (9,214.78 km) |
| Santa Clara to Ohrdruf | 5,702.18 mi (9,176.77 km) |
| Santa Clara to Ohringen | 5,760.11 mi (9,270.01 km) |
| Santa Clara to Olbernhau | 5,776.77 mi (9,296.81 km) |
| Santa Clara to Olching | 5,864.78 mi (9,438.45 km) |
| Santa Clara to Oldenburg | 5,509.93 mi (8,867.38 km) |
| Santa Clara to Oldenburg in Holstein | 5,512.31 mi (8,871.21 km) |
| Santa Clara to Olfen | 5,565.60 mi (8,956.97 km) |
| Santa Clara to Olpe | 5,615.58 mi (9,037.40 km) |
| Santa Clara to Olsberg | 5,614.72 mi (9,036.02 km) |
| Santa Clara to Oranienburg | 5,655.33 mi (9,101.38 km) |
| Santa Clara to Ortenberg | 5,684.42 mi (9,148.18 km) |
