| California to Nuth | 3,928.66 mi (6,322.57 km) |
| California to Oegstgeest | 3,840.61 mi (6,180.86 km) |
| California to Oirschot | 3,890.47 mi (6,261.10 km) |
| California to Oisterwijk | 3,884.40 mi (6,251.33 km) |
| California to Oldebroek | 3,890.92 mi (6,261.83 km) |
| California to Oldenzaal | 3,934.88 mi (6,332.58 km) |
| California to Ommen | 3,909.58 mi (6,291.85 km) |
| California to Oosterend | 3,883.93 mi (6,250.58 km) |
| California to Oosterhout | 3,869.17 mi (6,226.83 km) |
| California to Oosterwolde | 3,893.01 mi (6,265.19 km) |
| California to Oostzaan | 3,851.20 mi (6,197.91 km) |
| California to Opmeer | 3,847.51 mi (6,191.97 km) |
| California to Oss | 3,892.55 mi (6,264.45 km) |
| California to Oud-Beijerland | 3,846.66 mi (6,190.60 km) |
| California to Oudenbosch | 3,857.10 mi (6,207.40 km) |
