| Owings Mills to Cadillac (Michigan) | 555.28 mi (893.64 km) |
| Owings Mills to Caguas (Puerto Rico) | 1,598.61 mi (2,572.71 km) |
| Owings Mills to Cahokia (Illinois) | 720.70 mi (1,159.86 km) |
| Owings Mills to Calabasas (California) | 2,325.08 mi (3,741.85 km) |
| Owings Mills to Caldwell (Idaho) | 2,062.70 mi (3,319.60 km) |
| Owings Mills to Caledonia (Wisconsin) | 622.13 mi (1,001.23 km) |
| Owings Mills to Calera (Alabama) | 703.57 mi (1,132.29 km) |
| Owings Mills to Calexico (California) | 2,193.99 mi (3,530.88 km) |
| Owings Mills to Calhoun (Georgia) | 563.47 mi (906.81 km) |
| Owings Mills to California (Maryland) | 78.65 mi (126.57 km) |
| Owings Mills to California City (California) | 2,257.81 mi (3,633.60 km) |
| Owings Mills to Callaway (Florida) | 810.45 mi (1,304.29 km) |
| Owings Mills to Calumet City (Illinois) | 584.84 mi (941.22 km) |
| Owings Mills to Calverton (Maryland) | 25.85 mi (41.60 km) |
| Owings Mills to Camano (Washington) | 2,320.40 mi (3,734.32 km) |
