| Boulder to Zory | 5,346.80 mi (8,604.85 km) |
| Boulder to Zuromin | 5,221.60 mi (8,403.36 km) |
| Boulder to Zychlin | 5,257.39 mi (8,460.95 km) |
| Boulder to Zyrardow | 5,289.81 mi (8,513.12 km) |
| Boulder to Zywiec | 5,380.38 mi (8,658.89 km) |
| Boulder to Abrantes | 4,861.25 mi (7,823.43 km) |
| Boulder to Agualva | 4,841.71 mi (7,791.97 km) |
| Boulder to Aguas Santas | 4,773.90 mi (7,682.85 km) |
| Boulder to Agueda | 4,805.42 mi (7,733.58 km) |
| Boulder to Albergaria-a-Velha | 4,799.23 mi (7,723.61 km) |
| Boulder to Albufeira | 4,956.76 mi (7,977.13 km) |
| Boulder to Alcacer do Sal | 4,892.16 mi (7,873.17 km) |
| Boulder to Alcanena | 4,840.89 mi (7,790.66 km) |
| Boulder to Alcobaca | 4,823.97 mi (7,763.43 km) |
| Boulder to Alcochete | 4,857.00 mi (7,816.58 km) |
