| Effingham to Cold Springs (Nevada) | 1,669.56 mi (2,686.90 km) |
| Effingham to Coldwater (Michigan) | 269.98 mi (434.49 km) |
| Effingham to Colesville (Maryland) | 618.92 mi (996.06 km) |
| Effingham to College (Alaska) | 2,922.91 mi (4,703.97 km) |
| Effingham to College Park (Georgia) | 441.77 mi (710.95 km) |
| Effingham to College Park (Maryland) | 622.91 mi (1,002.48 km) |
| Effingham to College Station (Texas) | 734.61 mi (1,182.24 km) |
| Effingham to Collegedale (Tennessee) | 340.90 mi (548.62 km) |
| Effingham to Colleyville (Texas) | 644.54 mi (1,037.29 km) |
| Effingham to Collierville (Tennessee) | 288.47 mi (464.24 km) |
| Effingham to Collinsville (Illinois) | 84.04 mi (135.26 km) |
| Effingham to Colonia (New Jersey) | 761.04 mi (1,224.77 km) |
| Effingham to Colonial Heights (Virginia) | 618.68 mi (995.67 km) |
| Effingham to Colonial Park (Pennsylvania) | 629.04 mi (1,012.34 km) |
| Effingham to Colorado Springs (Colorado) | 869.48 mi (1,399.29 km) |
