| Castaic to Orthez | 5,781.49 mi (9,304.42 km) |
| Castaic to Orvault | 5,574.73 mi (8,971.66 km) |
| Castaic to Osny | 5,614.58 mi (9,035.80 km) |
| Castaic to Ostwald | 5,817.99 mi (9,363.15 km) |
| Castaic to Ouistreham | 5,527.94 mi (8,896.36 km) |
| Castaic to Oullins | 5,869.09 mi (9,445.38 km) |
| Castaic to Outreau | 5,520.73 mi (8,884.75 km) |
| Castaic to Oyonnax | 5,869.87 mi (9,446.65 km) |
| Castaic to Ozoir-la-Ferriere | 5,648.21 mi (9,089.91 km) |
| Castaic to Pace | 5,529.14 mi (8,898.28 km) |
| Castaic to Palaiseau | 5,637.16 mi (9,072.14 km) |
| Castaic to Pamiers | 5,885.91 mi (9,472.45 km) |
| Castaic to Panazol | 5,744.15 mi (9,244.31 km) |
| Castaic to Pantin | 5,633.44 mi (9,066.14 km) |
| Castaic to Paray-le-Monial | 5,809.55 mi (9,349.57 km) |
