| Castle Rock to Montana | 5,863.06 mi (9,435.69 km) |
| Castle Rock to Nova Zagora | 5,998.29 mi (9,653.31 km) |
| Castle Rock to Novi Iskar | 5,900.27 mi (9,495.56 km) |
| Castle Rock to Novi Pazar | 5,984.76 mi (9,631.54 km) |
| Castle Rock to Omurtag | 5,976.04 mi (9,617.51 km) |
| Castle Rock to Panagyurishte | 5,942.41 mi (9,563.38 km) |
| Castle Rock to Parvomay | 5,996.11 mi (9,649.81 km) |
| Castle Rock to Pavlikeni | 5,935.65 mi (9,552.51 km) |
| Castle Rock to Pazardzhik | 5,963.58 mi (9,597.45 km) |
| Castle Rock to Pernik | 5,901.39 mi (9,497.37 km) |
| Castle Rock to Peshtera | 5,971.76 mi (9,610.62 km) |
| Castle Rock to Petrich | 5,972.73 mi (9,612.18 km) |
| Castle Rock to Pleven | 5,905.50 mi (9,503.99 km) |
| Castle Rock to Plovdiv | 5,979.12 mi (9,622.46 km) |
| Castle Rock to Pomorie | 6,041.10 mi (9,722.21 km) |
