| Oak Ridge to Redondela | 3,944.85 mi (6,348.63 km) |
| Oak Ridge to Reinosa | 4,137.66 mi (6,658.92 km) |
| Oak Ridge to Requena | 4,381.70 mi (7,051.66 km) |
| Oak Ridge to Reus | 4,435.35 mi (7,138.00 km) |
| Oak Ridge to Rianxo | 3,926.34 mi (6,318.84 km) |
| Oak Ridge to Ribadeo | 3,988.48 mi (6,418.83 km) |
| Oak Ridge to Rincon de la Victoria | 4,309.82 mi (6,935.99 km) |
| Oak Ridge to Ripoll | 4,453.22 mi (7,166.76 km) |
| Oak Ridge to Ripollet | 4,473.47 mi (7,199.36 km) |
| Oak Ridge to Rojales | 4,442.88 mi (7,150.13 km) |
| Oak Ridge to Ronda | 4,265.22 mi (6,864.21 km) |
| Oak Ridge to Roquetas de Mar | 4,391.25 mi (7,067.03 km) |
| Oak Ridge to Rosas | 4,496.30 mi (7,236.10 km) |
| Oak Ridge to Rubi | 4,467.81 mi (7,190.25 km) |
| Oak Ridge to Rute | 4,287.68 mi (6,900.35 km) |
