| Westchase to Oerlinghausen | 4,767.38 mi (7,672.36 km) |
| Westchase to Oestrich-Winkel | 4,784.71 mi (7,700.24 km) |
| Westchase to Offenburg | 4,817.38 mi (7,752.82 km) |
| Westchase to Oftersheim | 4,823.94 mi (7,763.39 km) |
| Westchase to Ohrdruf | 4,877.99 mi (7,850.36 km) |
| Westchase to Ohringen | 4,866.72 mi (7,832.23 km) |
| Westchase to Olbernhau | 4,987.65 mi (8,026.84 km) |
| Westchase to Olching | 4,969.06 mi (7,996.93 km) |
| Westchase to Oldenburg | 4,723.27 mi (7,601.37 km) |
| Westchase to Oldenburg in Holstein | 4,800.28 mi (7,725.30 km) |
| Westchase to Olfen | 4,721.01 mi (7,597.74 km) |
| Westchase to Olpe | 4,754.81 mi (7,652.13 km) |
| Westchase to Olsberg | 4,773.92 mi (7,682.88 km) |
| Westchase to Oranienburg | 4,928.76 mi (7,932.07 km) |
| Westchase to Ortenberg | 4,820.43 mi (7,757.73 km) |
