| Effingham to Camarillo (California) | 1,714.32 mi (2,758.93 km) |
| Effingham to Camas (Washington) | 1,772.30 mi (2,852.24 km) |
| Effingham to Cambridge (Maryland) | 671.87 mi (1,081.27 km) |
| Effingham to Cambridge (Massachusetts) | 937.95 mi (1,509.48 km) |
| Effingham to Camden (Arkansas) | 451.94 mi (727.33 km) |
| Effingham to Camden (New Jersey) | 717.97 mi (1,155.46 km) |
| Effingham to Cameron Park (California) | 1,735.13 mi (2,792.42 km) |
| Effingham to Camp Pendleton South (California) | 1,651.60 mi (2,657.99 km) |
| Effingham to Camp Springs (Maryland) | 624.81 mi (1,005.54 km) |
| Effingham to Camp Verde (Arizona) | 1,322.40 mi (2,128.20 km) |
| Effingham to Campbell (California) | 1,807.93 mi (2,909.58 km) |
| Effingham to Campbellsville (Kentucky) | 212.62 mi (342.18 km) |
| Effingham to Campton Hills (Illinois) | 195.61 mi (314.81 km) |
| Effingham to Canby (Oregon) | 1,783.90 mi (2,870.90 km) |
| Effingham to Candelaria (Puerto Rico) | 1,958.29 mi (3,151.56 km) |
