| Boulder City to Redondela | 5,317.84 mi (8,558.24 km) |
| Boulder City to Reinosa | 5,465.91 mi (8,796.54 km) |
| Boulder City to Requena | 5,743.71 mi (9,243.61 km) |
| Boulder City to Reus | 5,752.39 mi (9,257.58 km) |
| Boulder City to Rianxo | 5,294.47 mi (8,520.63 km) |
| Boulder City to Ribadeo | 5,328.86 mi (8,575.98 km) |
| Boulder City to Rincon de la Victoria | 5,738.28 mi (9,234.86 km) |
| Boulder City to Ripoll | 5,743.76 mi (9,243.68 km) |
| Boulder City to Ripollet | 5,775.96 mi (9,295.51 km) |
| Boulder City to Rojales | 5,823.29 mi (9,371.68 km) |
| Boulder City to Ronda | 5,699.94 mi (9,173.16 km) |
| Boulder City to Roquetas de Mar | 5,806.28 mi (9,344.30 km) |
| Boulder City to Rosas | 5,777.22 mi (9,297.53 km) |
| Boulder City to Rubi | 5,771.43 mi (9,288.22 km) |
| Boulder City to Rute | 5,708.05 mi (9,186.22 km) |
