| Howard to Camarillo (California) | 1,786.20 mi (2,874.61 km) |
| Howard to Camas (Washington) | 1,663.77 mi (2,677.58 km) |
| Howard to Cambridge (Maryland) | 746.26 mi (1,201.00 km) |
| Howard to Cambridge (Massachusetts) | 862.86 mi (1,388.64 km) |
| Howard to Camden (Arkansas) | 801.49 mi (1,289.87 km) |
| Howard to Camden (New Jersey) | 736.11 mi (1,184.65 km) |
| Howard to Cameron Park (California) | 1,734.52 mi (2,791.44 km) |
| Howard to Camp Pendleton South (California) | 1,746.47 mi (2,810.67 km) |
| Howard to Camp Springs (Maryland) | 699.71 mi (1,126.08 km) |
| Howard to Camp Verde (Arizona) | 1,434.41 mi (2,308.47 km) |
| Howard to Campbell (California) | 1,823.49 mi (2,934.63 km) |
| Howard to Campbellsville (Kentucky) | 519.26 mi (835.67 km) |
| Howard to Campton Hills (Illinois) | 181.79 mi (292.56 km) |
| Howard to Canby (Oregon) | 1,680.18 mi (2,703.98 km) |
| Howard to Candelaria (Puerto Rico) | 2,205.00 mi (3,548.60 km) |
