| Houston to Montana | 6,062.19 mi (9,756.15 km) |
| Houston to Nova Zagora | 6,210.10 mi (9,994.19 km) |
| Houston to Novi Iskar | 6,094.30 mi (9,807.83 km) |
| Houston to Novi Pazar | 6,214.08 mi (10,000.60 km) |
| Houston to Omurtag | 6,196.85 mi (9,972.87 km) |
| Houston to Panagyurishte | 6,139.93 mi (9,881.25 km) |
| Houston to Parvomay | 6,197.83 mi (9,974.45 km) |
| Houston to Pavlikeni | 6,149.29 mi (9,896.33 km) |
| Houston to Pazardzhik | 6,159.31 mi (9,912.45 km) |
| Houston to Pernik | 6,090.98 mi (9,802.49 km) |
| Houston to Peshtera | 6,165.59 mi (9,922.56 km) |
| Houston to Petrich | 6,151.60 mi (9,900.04 km) |
| Houston to Pleven | 6,115.33 mi (9,841.67 km) |
| Houston to Plovdiv | 6,177.64 mi (9,941.94 km) |
| Houston to Pomorie | 6,266.39 mi (10,084.79 km) |
