| Boulder to Irun | 4,963.56 mi (7,988.08 km) |
| Boulder to Isla-Cristina | 4,992.84 mi (8,035.21 km) |
| Boulder to Jaca | 5,046.50 mi (8,121.55 km) |
| Boulder to Jaen | 5,122.18 mi (8,243.36 km) |
| Boulder to Jerez de la Frontera | 5,066.45 mi (8,153.67 km) |
| Boulder to Jerez de los Caballeros | 4,969.94 mi (7,998.34 km) |
| Boulder to Jodar | 5,137.21 mi (8,267.54 km) |
| Boulder to Jumilla | 5,194.03 mi (8,358.99 km) |
| Boulder to La Algaba | 5,039.90 mi (8,110.94 km) |
| Boulder to La Baneza | 4,841.76 mi (7,792.06 km) |
| Boulder to La Carlota | 5,076.74 mi (8,170.23 km) |
| Boulder to La Carolina | 5,107.14 mi (8,219.15 km) |
| Boulder to La Corredoria | 4,800.49 mi (7,725.63 km) |
| Boulder to La Eliana | 5,178.77 mi (8,334.43 km) |
| Boulder to La Escala | 5,209.55 mi (8,383.97 km) |
