| Southborough to Redondela | 742.56 mi (1,195.04 km) |
| Southborough to Reinosa | 600.24 mi (965.99 km) |
| Southborough to Requena | 809.26 mi (1,302.39 km) |
| Southborough to Reus | 692.44 mi (1,114.37 km) |
| Southborough to Rianxo | 726.50 mi (1,169.19 km) |
| Southborough to Ribadeo | 627.49 mi (1,009.85 km) |
| Southborough to Rincon de la Victoria | 1,022.75 mi (1,645.96 km) |
| Southborough to Ripoll | 625.62 mi (1,006.83 km) |
| Southborough to Ripollet | 673.66 mi (1,084.14 km) |
| Southborough to Rojales | 904.42 mi (1,455.52 km) |
| Southborough to Ronda | 1,031.74 mi (1,660.43 km) |
| Southborough to Roquetas de Mar | 1,004.69 mi (1,616.90 km) |
| Southborough to Rosas | 629.82 mi (1,013.60 km) |
| Southborough to Rubi | 673.14 mi (1,083.31 km) |
| Southborough to Rute | 983.06 mi (1,582.07 km) |
