| Halfway to Cadillac (Michigan) | 506.50 mi (815.14 km) |
| Halfway to Caguas (Puerto Rico) | 1,635.45 mi (2,631.99 km) |
| Halfway to Cahokia (Illinois) | 668.86 mi (1,076.43 km) |
| Halfway to Calabasas (California) | 2,272.04 mi (3,656.50 km) |
| Halfway to Caldwell (Idaho) | 2,008.92 mi (3,233.04 km) |
| Halfway to Caledonia (Wisconsin) | 569.00 mi (915.71 km) |
| Halfway to Calera (Alabama) | 670.47 mi (1,079.02 km) |
| Halfway to Calexico (California) | 2,141.92 mi (3,447.09 km) |
| Halfway to Calhoun (Georgia) | 530.36 mi (853.53 km) |
| Halfway to California (Maryland) | 114.04 mi (183.52 km) |
| Halfway to California City (California) | 2,204.55 mi (3,547.88 km) |
| Halfway to Callaway (Florida) | 789.15 mi (1,270.02 km) |
| Halfway to Calumet City (Illinois) | 530.86 mi (854.34 km) |
| Halfway to Calverton (Maryland) | 58.44 mi (94.06 km) |
| Halfway to Camano (Washington) | 2,268.20 mi (3,650.32 km) |
