| Houston to Zory | 5,608.86 mi (9,026.58 km) |
| Houston to Zuromin | 5,524.82 mi (8,891.33 km) |
| Houston to Zychlin | 5,549.83 mi (8,931.59 km) |
| Houston to Zyrardow | 5,585.30 mi (8,988.67 km) |
| Houston to Zywiec | 5,641.84 mi (9,079.66 km) |
| Houston to Abrantes | 4,808.90 mi (7,739.18 km) |
| Houston to Agualva | 4,772.33 mi (7,680.32 km) |
| Houston to Aguas Santas | 4,744.70 mi (7,635.86 km) |
| Houston to Agueda | 4,767.74 mi (7,672.94 km) |
| Houston to Albergaria-a-Velha | 4,763.10 mi (7,665.47 km) |
| Houston to Albufeira | 4,869.89 mi (7,837.33 km) |
| Houston to Alcacer do Sal | 4,821.99 mi (7,760.24 km) |
| Houston to Alcanena | 4,785.65 mi (7,701.75 km) |
| Houston to Alcobaca | 4,768.04 mi (7,673.42 km) |
| Houston to Alcochete | 4,789.42 mi (7,707.83 km) |
