| Boston to Redondela | 838.74 mi (1,349.83 km) |
| Boston to Reinosa | 714.51 mi (1,149.89 km) |
| Boston to Requena | 933.32 mi (1,502.04 km) |
| Boston to Reus | 818.32 mi (1,316.96 km) |
| Boston to Rianxo | 820.42 mi (1,320.35 km) |
| Boston to Ribadeo | 726.99 mi (1,169.98 km) |
| Boston to Rincon de la Victoria | 1,141.99 mi (1,837.86 km) |
| Boston to Ripoll | 751.34 mi (1,209.17 km) |
| Boston to Ripollet | 799.45 mi (1,286.59 km) |
| Boston to Rojales | 1,029.03 mi (1,656.06 km) |
| Boston to Ronda | 1,149.04 mi (1,849.21 km) |
| Boston to Roquetas de Mar | 1,126.97 mi (1,813.69 km) |
| Boston to Rosas | 754.66 mi (1,214.51 km) |
| Boston to Rubi | 798.98 mi (1,285.84 km) |
| Boston to Rute | 1,101.83 mi (1,773.22 km) |
