| South Houston to Montana | 6,062.69 mi (9,756.96 km) |
| South Houston to Nova Zagora | 6,210.76 mi (9,995.25 km) |
| South Houston to Novi Iskar | 6,094.72 mi (9,808.50 km) |
| South Houston to Novi Pazar | 6,215.01 mi (10,002.10 km) |
| South Houston to Omurtag | 6,197.66 mi (9,974.16 km) |
| South Houston to Panagyurishte | 6,140.38 mi (9,881.99 km) |
| South Houston to Parvomay | 6,198.33 mi (9,975.26 km) |
| South Houston to Pavlikeni | 6,149.99 mi (9,897.46 km) |
| South Houston to Pazardzhik | 6,159.73 mi (9,913.13 km) |
| South Houston to Pernik | 6,091.33 mi (9,803.05 km) |
| South Houston to Peshtera | 6,165.98 mi (9,923.18 km) |
| South Houston to Petrich | 6,151.76 mi (9,900.29 km) |
| South Houston to Pleven | 6,115.99 mi (9,842.73 km) |
| South Houston to Plovdiv | 6,178.09 mi (9,942.68 km) |
| South Houston to Pomorie | 6,267.24 mi (10,086.15 km) |
