| Alton to Cookeville (Tennessee) | 4,110.59 mi (6,615.36 km) |
| Alton to Coolidge (Arizona) | 5,264.46 mi (8,472.34 km) |
| Alton to Coon Rapids (Minnesota) | 3,986.58 mi (6,415.78 km) |
| Alton to Cooper City (Florida) | 4,386.04 mi (7,058.64 km) |
| Alton to Coos Bay (Oregon) | 5,074.85 mi (8,167.19 km) |
| Alton to Copiague (New York) | 3,410.55 mi (5,488.75 km) |
| Alton to Coppell (Texas) | 4,723.91 mi (7,602.40 km) |
| Alton to Copperas Cove (Texas) | 4,855.00 mi (7,813.36 km) |
| Alton to Coral Gables (Florida) | 4,402.58 mi (7,085.27 km) |
| Alton to Coral Springs (Florida) | 4,373.67 mi (7,038.74 km) |
| Alton to Coral Terrace (Florida) | 4,401.87 mi (7,084.12 km) |
| Alton to Coralville (Iowa) | 4,085.92 mi (6,575.66 km) |
| Alton to Coram (New York) | 3,385.67 mi (5,448.70 km) |
| Alton to Corcoran (California) | 5,355.96 mi (8,619.59 km) |
| Alton to Cordele (Georgia) | 4,241.09 mi (6,825.38 km) |
