| Pacific Grove to Oerlinghausen | 5,630.10 mi (9,060.78 km) |
| Pacific Grove to Oestrich-Winkel | 5,718.97 mi (9,203.79 km) |
| Pacific Grove to Offenburg | 5,800.22 mi (9,334.56 km) |
| Pacific Grove to Oftersheim | 5,769.31 mi (9,284.81 km) |
| Pacific Grove to Ohrdruf | 5,746.63 mi (9,248.31 km) |
| Pacific Grove to Ohringen | 5,803.81 mi (9,340.32 km) |
| Pacific Grove to Olbernhau | 5,821.78 mi (9,369.25 km) |
| Pacific Grove to Olching | 5,908.65 mi (9,509.06 km) |
| Pacific Grove to Oldenburg | 5,554.46 mi (8,939.04 km) |
| Pacific Grove to Oldenburg in Holstein | 5,557.71 mi (8,944.28 km) |
| Pacific Grove to Olfen | 5,609.53 mi (9,027.66 km) |
| Pacific Grove to Olpe | 5,659.40 mi (9,107.92 km) |
| Pacific Grove to Olsberg | 5,658.80 mi (9,106.95 km) |
| Pacific Grove to Oranienburg | 5,700.84 mi (9,174.61 km) |
| Pacific Grove to Ortenberg | 5,728.34 mi (9,218.87 km) |
