| Diamond Bar to Orthez | 5,776.72 mi (9,296.74 km) |
| Diamond Bar to Orvault | 5,572.39 mi (8,967.90 km) |
| Diamond Bar to Osny | 5,615.25 mi (9,036.88 km) |
| Diamond Bar to Ostwald | 5,820.99 mi (9,367.98 km) |
| Diamond Bar to Ouistreham | 5,527.73 mi (8,896.02 km) |
| Diamond Bar to Oullins | 5,868.69 mi (9,444.75 km) |
| Diamond Bar to Outreau | 5,522.40 mi (8,887.44 km) |
| Diamond Bar to Oyonnax | 5,870.28 mi (9,447.31 km) |
| Diamond Bar to Ozoir-la-Ferriere | 5,648.96 mi (9,091.12 km) |
| Diamond Bar to Pace | 5,527.39 mi (8,895.48 km) |
| Diamond Bar to Palaiseau | 5,637.67 mi (9,072.95 km) |
| Diamond Bar to Pamiers | 5,882.05 mi (9,466.25 km) |
| Diamond Bar to Panazol | 5,742.11 mi (9,241.04 km) |
| Diamond Bar to Pantin | 5,634.15 mi (9,067.28 km) |
| Diamond Bar to Paray-le-Monial | 5,809.33 mi (9,349.22 km) |
