| Castro Valley to Montana | 6,424.81 mi (10,339.74 km) |
| Castro Valley to Nova Zagora | 6,543.31 mi (10,530.44 km) |
| Castro Valley to Novi Iskar | 6,465.20 mi (10,404.74 km) |
| Castro Valley to Novi Pazar | 6,514.01 mi (10,483.28 km) |
| Castro Valley to Omurtag | 6,513.59 mi (10,482.62 km) |
| Castro Valley to Panagyurishte | 6,502.62 mi (10,464.96 km) |
| Castro Valley to Parvomay | 6,550.47 mi (10,541.97 km) |
| Castro Valley to Pavlikeni | 6,481.41 mi (10,430.81 km) |
| Castro Valley to Pazardzhik | 6,524.60 mi (10,500.33 km) |
| Castro Valley to Pernik | 6,470.26 mi (10,412.88 km) |
| Castro Valley to Peshtera | 6,534.20 mi (10,515.78 km) |
| Castro Valley to Petrich | 6,548.51 mi (10,538.81 km) |
| Castro Valley to Pleven | 6,455.91 mi (10,389.79 km) |
| Castro Valley to Plovdiv | 6,537.03 mi (10,520.34 km) |
| Castro Valley to Pomorie | 6,571.93 mi (10,576.50 km) |
