| Casper to Montana | 5,709.73 mi (9,188.93 km) |
| Casper to Nova Zagora | 5,841.01 mi (9,400.20 km) |
| Casper to Novi Iskar | 5,747.93 mi (9,250.39 km) |
| Casper to Novi Pazar | 5,823.40 mi (9,371.86 km) |
| Casper to Omurtag | 5,816.76 mi (9,361.18 km) |
| Casper to Panagyurishte | 5,788.94 mi (9,316.40 km) |
| Casper to Parvomay | 5,841.28 mi (9,400.63 km) |
| Casper to Pavlikeni | 5,778.35 mi (9,299.35 km) |
| Casper to Pazardzhik | 5,810.41 mi (9,350.94 km) |
| Casper to Pernik | 5,750.12 mi (9,253.93 km) |
| Casper to Peshtera | 5,819.00 mi (9,364.77 km) |
| Casper to Petrich | 5,823.61 mi (9,372.20 km) |
| Casper to Pleven | 5,749.31 mi (9,252.62 km) |
| Casper to Plovdiv | 5,825.17 mi (9,374.70 km) |
| Casper to Pomorie | 5,880.34 mi (9,463.50 km) |
