| Solothurn to Caguas (Puerto Rico) | 4,537.03 mi (7,301.64 km) |
| Solothurn to Cahokia (Illinois) | 4,648.47 mi (7,480.99 km) |
| Solothurn to Calabasas (California) | 5,902.09 mi (9,498.50 km) |
| Solothurn to Caldwell (Idaho) | 5,298.30 mi (8,526.78 km) |
| Solothurn to Caledonia (Wisconsin) | 4,363.21 mi (7,021.91 km) |
| Solothurn to Calera (Alabama) | 4,766.30 mi (7,670.61 km) |
| Solothurn to Calexico (California) | 5,882.50 mi (9,466.97 km) |
| Solothurn to Calhoun (Georgia) | 4,626.11 mi (7,445.01 km) |
| Solothurn to California (Maryland) | 4,098.34 mi (6,595.65 km) |
| Solothurn to California City (California) | 5,818.31 mi (9,363.67 km) |
| Solothurn to Callaway (Florida) | 4,858.53 mi (7,819.05 km) |
| Solothurn to Calumet City (Illinois) | 4,404.19 mi (7,087.86 km) |
| Solothurn to Calverton (Maryland) | 4,085.14 mi (6,574.40 km) |
| Solothurn to Camano (Washington) | 5,193.95 mi (8,358.86 km) |
| Solothurn to Camarillo (California) | 5,908.54 mi (9,508.88 km) |
