| McDonough to Castle Pines (Colorado) | 1,221.01 mi (1,965.02 km) |
| McDonough to Castle Rock (Colorado) | 1,218.75 mi (1,961.38 km) |
| McDonough to Castro Valley (California) | 2,136.26 mi (3,437.98 km) |
| McDonough to Catalina Foothills (Arizona) | 1,549.07 mi (2,492.98 km) |
| McDonough to Cataño (Puerto Rico) | 1,520.49 mi (2,446.99 km) |
| McDonough to Cathedral City (California) | 1,851.29 mi (2,979.36 km) |
| McDonough to Catonsville (Maryland) | 575.72 mi (926.52 km) |
| McDonough to Cave Spring (Virginia) | 350.57 mi (564.20 km) |
| McDonough to Cayce (South Carolina) | 182.03 mi (292.95 km) |
| McDonough to Cayey (Puerto Rico) | 1,535.87 mi (2,471.74 km) |
| McDonough to Cedar City (Utah) | 1,646.34 mi (2,649.53 km) |
| McDonough to Cedar Falls (Iowa) | 772.47 mi (1,243.17 km) |
| McDonough to Cedar Hill (Texas) | 744.02 mi (1,197.38 km) |
| McDonough to Cedar Lake (Indiana) | 576.74 mi (928.17 km) |
| McDonough to Cedar Mill (Oregon) | 2,198.05 mi (3,537.42 km) |
