| Seymour to Castle Pines (Colorado) | 1,014.90 mi (1,633.33 km) |
| Seymour to Castle Rock (Colorado) | 1,014.43 mi (1,632.56 km) |
| Seymour to Castro Valley (California) | 1,949.52 mi (3,137.44 km) |
| Seymour to Catalina Foothills (Arizona) | 1,471.23 mi (2,367.71 km) |
| Seymour to Cataño (Puerto Rico) | 1,846.10 mi (2,971.01 km) |
| Seymour to Cathedral City (California) | 1,728.18 mi (2,781.24 km) |
| Seymour to Catonsville (Maryland) | 490.79 mi (789.84 km) |
| Seymour to Cave Spring (Virginia) | 341.30 mi (549.28 km) |
| Seymour to Cayce (South Carolina) | 438.06 mi (705.00 km) |
| Seymour to Cayey (Puerto Rico) | 1,863.50 mi (2,999.02 km) |
| Seymour to Cedar City (Utah) | 1,471.90 mi (2,368.80 km) |
| Seymour to Cedar Falls (Iowa) | 422.82 mi (680.47 km) |
| Seymour to Cedar Hill (Texas) | 759.69 mi (1,222.60 km) |
| Seymour to Cedar Lake (Indiana) | 186.23 mi (299.71 km) |
| Seymour to Cedar Mill (Oregon) | 1,923.88 mi (3,096.18 km) |
