| Casper to Orthez | 4,906.52 mi (7,896.29 km) |
| Casper to Orvault | 4,704.07 mi (7,570.47 km) |
| Casper to Osny | 4,751.52 mi (7,646.83 km) |
| Casper to Ostwald | 4,962.32 mi (7,986.08 km) |
| Casper to Ouistreham | 4,662.42 mi (7,503.44 km) |
| Casper to Oullins | 5,002.92 mi (8,051.43 km) |
| Casper to Outreau | 4,660.80 mi (7,500.84 km) |
| Casper to Oyonnax | 5,005.90 mi (8,056.21 km) |
| Casper to Ozoir-la-Ferriere | 4,785.36 mi (7,701.29 km) |
| Casper to Pace | 4,659.80 mi (7,499.22 km) |
| Casper to Palaiseau | 4,773.60 mi (7,682.36 km) |
| Casper to Pamiers | 5,012.34 mi (8,066.58 km) |
| Casper to Panazol | 4,874.11 mi (7,844.12 km) |
| Casper to Pantin | 4,770.47 mi (7,677.33 km) |
| Casper to Paray-le-Monial | 4,943.88 mi (7,956.40 km) |
