| Big Spring to Montana | 6,152.08 mi (9,900.82 km) |
| Big Spring to Nova Zagora | 6,294.82 mi (10,130.53 km) |
| Big Spring to Novi Iskar | 6,186.76 mi (9,956.63 km) |
| Big Spring to Novi Pazar | 6,290.48 mi (10,123.56 km) |
| Big Spring to Omurtag | 6,277.23 mi (10,102.22 km) |
| Big Spring to Panagyurishte | 6,231.00 mi (10,027.83 km) |
| Big Spring to Parvomay | 6,287.25 mi (10,118.35 km) |
| Big Spring to Pavlikeni | 6,232.81 mi (10,030.74 km) |
| Big Spring to Pazardzhik | 6,251.33 mi (10,060.55 km) |
| Big Spring to Pernik | 6,185.50 mi (9,954.60 km) |
| Big Spring to Peshtera | 6,258.54 mi (10,072.15 km) |
| Big Spring to Petrich | 6,251.46 mi (10,060.75 km) |
| Big Spring to Pleven | 6,200.47 mi (9,978.69 km) |
| Big Spring to Plovdiv | 6,268.45 mi (10,088.09 km) |
| Big Spring to Pomorie | 6,345.00 mi (10,211.30 km) |
