| Boulder to Granada | 5,154.96 mi (8,296.10 km) |
| Boulder to Granadilla de Abona | 4,934.06 mi (7,940.60 km) |
| Boulder to Granollers | 5,199.74 mi (8,368.18 km) |
| Boulder to Grinon | 5,013.66 mi (8,068.71 km) |
| Boulder to Guadalajara | 5,024.03 mi (8,085.40 km) |
| Boulder to Guadarrama | 4,984.36 mi (8,021.56 km) |
| Boulder to Guadix | 5,169.63 mi (8,319.71 km) |
| Boulder to Guardamar del Segura | 5,239.17 mi (8,431.63 km) |
| Boulder to Guernica y Luno | 4,929.76 mi (7,933.69 km) |
| Boulder to Guia de Isora | 4,920.61 mi (7,918.96 km) |
| Boulder to Guillena | 5,034.21 mi (8,101.78 km) |
| Boulder to Guimar | 4,934.50 mi (7,941.31 km) |
| Boulder to Hellin | 5,177.46 mi (8,332.32 km) |
| Boulder to Herencia | 5,070.70 mi (8,160.50 km) |
| Boulder to Hernani | 4,959.59 mi (7,981.69 km) |
