| Solothurn to Redondela | 860.58 mi (1,384.96 km) |
| Solothurn to Reinosa | 638.40 mi (1,027.40 km) |
| Solothurn to Requena | 687.24 mi (1,106.00 km) |
| Solothurn to Reus | 525.67 mi (845.98 km) |
| Solothurn to Rianxo | 857.67 mi (1,380.29 km) |
| Solothurn to Ribadeo | 750.34 mi (1,207.56 km) |
| Solothurn to Rincon de la Victoria | 943.78 mi (1,518.86 km) |
| Solothurn to Ripoll | 434.43 mi (699.15 km) |
| Solothurn to Ripollet | 475.88 mi (765.86 km) |
| Solothurn to Rojales | 756.54 mi (1,217.54 km) |
| Solothurn to Ronda | 972.02 mi (1,564.31 km) |
| Solothurn to Roquetas de Mar | 888.96 mi (1,430.64 km) |
| Solothurn to Rosas | 403.44 mi (649.27 km) |
| Solothurn to Rubi | 479.55 mi (771.76 km) |
| Solothurn to Rute | 913.40 mi (1,469.97 km) |
