| South Houston to Redondela | 4,713.98 mi (7,586.42 km) |
| South Houston to Reinosa | 4,906.27 mi (7,895.87 km) |
| South Houston to Requena | 5,150.81 mi (8,289.43 km) |
| South Houston to Reus | 5,203.97 mi (8,374.99 km) |
| South Houston to Rianxo | 4,695.46 mi (7,556.61 km) |
| South Houston to Ribadeo | 4,757.23 mi (7,656.03 km) |
| South Houston to Rincon de la Victoria | 5,076.89 mi (8,170.46 km) |
| South Houston to Ripoll | 5,220.95 mi (8,402.31 km) |
| South Houston to Ripollet | 5,241.70 mi (8,435.71 km) |
| South Houston to Rojales | 5,211.74 mi (8,387.48 km) |
| South Houston to Ronda | 5,031.98 mi (8,098.19 km) |
| South Houston to Roquetas de Mar | 5,158.93 mi (8,302.49 km) |
| South Houston to Rosas | 5,263.68 mi (8,471.08 km) |
| South Houston to Rubi | 5,236.07 mi (8,426.64 km) |
| South Houston to Rute | 5,055.26 mi (8,135.65 km) |
