| Sun Prairie to Castle Pines (Colorado) | 849.50 mi (1,367.14 km) |
| Sun Prairie to Castle Rock (Colorado) | 850.97 mi (1,369.51 km) |
| Sun Prairie to Castro Valley (California) | 1,755.08 mi (2,824.53 km) |
| Sun Prairie to Catalina Foothills (Arizona) | 1,394.88 mi (2,244.84 km) |
| Sun Prairie to Cataño (Puerto Rico) | 2,175.58 mi (3,501.26 km) |
| Sun Prairie to Cathedral City (California) | 1,598.18 mi (2,572.01 km) |
| Sun Prairie to Catonsville (Maryland) | 702.55 mi (1,130.64 km) |
| Sun Prairie to Cave Spring (Virginia) | 636.95 mi (1,025.08 km) |
| Sun Prairie to Cayce (South Carolina) | 775.79 mi (1,248.51 km) |
| Sun Prairie to Cayey (Puerto Rico) | 2,193.58 mi (3,530.23 km) |
| Sun Prairie to Cedar City (Utah) | 1,305.91 mi (2,101.66 km) |
| Sun Prairie to Cedar Falls (Iowa) | 169.28 mi (272.43 km) |
| Sun Prairie to Cedar Hill (Texas) | 844.03 mi (1,358.34 km) |
| Sun Prairie to Cedar Lake (Indiana) | 155.34 mi (249.99 km) |
| Sun Prairie to Cedar Mill (Oregon) | 1,653.86 mi (2,661.64 km) |
