| Mason City to Redondela | 4,094.77 mi (6,589.90 km) |
| Mason City to Reinosa | 4,258.21 mi (6,852.92 km) |
| Mason City to Requena | 4,527.46 mi (7,286.24 km) |
| Mason City to Reus | 4,551.21 mi (7,324.46 km) |
| Mason City to Rianxo | 4,072.65 mi (6,554.29 km) |
| Mason City to Ribadeo | 4,115.91 mi (6,623.92 km) |
| Mason City to Rincon de la Victoria | 4,502.79 mi (7,246.54 km) |
| Mason City to Ripoll | 4,551.96 mi (7,325.68 km) |
| Mason City to Ripollet | 4,580.16 mi (7,371.05 km) |
| Mason City to Rojales | 4,601.94 mi (7,406.11 km) |
| Mason City to Ronda | 4,462.63 mi (7,181.91 km) |
| Mason City to Roquetas de Mar | 4,574.78 mi (7,362.40 km) |
| Mason City to Rosas | 4,589.32 mi (7,385.80 km) |
| Mason City to Rubi | 4,575.18 mi (7,363.04 km) |
| Mason City to Rute | 4,474.50 mi (7,201.00 km) |
