| Festus to Cadillac (Michigan) | 490.58 mi (789.51 km) |
| Festus to Caguas (Puerto Rico) | 2,014.66 mi (3,242.28 km) |
| Festus to Cahokia (Illinois) | 26.94 mi (43.36 km) |
| Festus to Calabasas (California) | 1,594.66 mi (2,566.35 km) |
| Festus to Caldwell (Idaho) | 1,413.93 mi (2,275.51 km) |
| Festus to Caledonia (Wisconsin) | 343.20 mi (552.33 km) |
| Festus to Calera (Alabama) | 407.57 mi (655.92 km) |
| Festus to Calexico (California) | 1,457.67 mi (2,345.90 km) |
| Festus to Calhoun (Georgia) | 398.66 mi (641.59 km) |
| Festus to California (Maryland) | 754.24 mi (1,213.83 km) |
| Festus to California City (California) | 1,530.50 mi (2,463.10 km) |
| Festus to Callaway (Florida) | 623.42 mi (1,003.29 km) |
| Festus to Calumet City (Illinois) | 279.15 mi (449.25 km) |
| Festus to Calverton (Maryland) | 728.10 mi (1,171.77 km) |
| Festus to Camano (Washington) | 1,739.37 mi (2,799.24 km) |
