| Solothurn to Krosno Odrzanskie | 474.35 mi (763.39 km) |
| Solothurn to Krotoszyn | 540.55 mi (869.94 km) |
| Solothurn to Kruszwica | 609.45 mi (980.81 km) |
| Solothurn to Krynica | 634.16 mi (1,020.59 km) |
| Solothurn to Krzeszowice | 586.87 mi (944.47 km) |
| Solothurn to Kudowa-Zdroj | 453.86 mi (730.42 km) |
| Solothurn to Kutno | 630.87 mi (1,015.29 km) |
| Solothurn to Kwidzyn | 672.37 mi (1,082.08 km) |
| Solothurn to Lancut | 698.09 mi (1,123.47 km) |
| Solothurn to Lapy | 786.05 mi (1,265.02 km) |
| Solothurn to Lask | 601.76 mi (968.45 km) |
| Solothurn to Laziska Gorne | 553.89 mi (891.40 km) |
| Solothurn to Lebork | 673.24 mi (1,083.48 km) |
| Solothurn to Leczna | 745.69 mi (1,200.07 km) |
| Solothurn to Leczyca | 618.64 mi (995.61 km) |
