| Skien to Cookeville (Tennessee) | 4,280.35 mi (6,888.56 km) |
| Skien to Coolidge (Arizona) | 5,237.40 mi (8,428.78 km) |
| Skien to Coon Rapids (Minnesota) | 4,011.92 mi (6,456.57 km) |
| Skien to Cooper City (Florida) | 4,681.74 mi (7,534.54 km) |
| Skien to Coos Bay (Oregon) | 4,876.42 mi (7,847.83 km) |
| Skien to Copiague (New York) | 3,633.54 mi (5,847.62 km) |
| Skien to Coppell (Texas) | 4,823.50 mi (7,762.67 km) |
| Skien to Copperas Cove (Texas) | 4,960.53 mi (7,983.21 km) |
| Skien to Coral Gables (Florida) | 4,700.97 mi (7,565.48 km) |
| Skien to Coral Springs (Florida) | 4,667.93 mi (7,512.31 km) |
| Skien to Coral Terrace (Florida) | 4,699.66 mi (7,563.37 km) |
| Skien to Coralville (Iowa) | 4,156.87 mi (6,689.84 km) |
| Skien to Coram (New York) | 3,609.43 mi (5,808.81 km) |
| Skien to Corcoran (California) | 5,238.73 mi (8,430.93 km) |
| Skien to Cordele (Georgia) | 4,460.99 mi (7,179.27 km) |
