| Harpenden to Cedar Rapids (Iowa) | 4,076.74 mi (6,560.88 km) |
| Harpenden to Cedarburg (Wisconsin) | 3,876.69 mi (6,238.92 km) |
| Harpenden to Celebration (Florida) | 4,343.72 mi (6,990.54 km) |
| Harpenden to Celina (Ohio) | 3,872.77 mi (6,232.63 km) |
| Harpenden to Celina (Texas) | 4,701.88 mi (7,566.95 km) |
| Harpenden to Centennial (Colorado) | 4,668.54 mi (7,513.29 km) |
| Harpenden to Center Point (Alabama) | 4,288.51 mi (6,901.69 km) |
| Harpenden to Centereach (New York) | 3,401.03 mi (5,473.42 km) |
| Harpenden to Centerton (Arkansas) | 4,451.18 mi (7,163.49 km) |
| Harpenden to Centerville (Ohio) | 3,899.29 mi (6,275.30 km) |
| Harpenden to Centerville (Utah) | 4,830.16 mi (7,773.39 km) |
| Harpenden to Central (Louisiana) | 4,618.24 mi (7,432.34 km) |
| Harpenden to Central Falls (Rhode Island) | 3,288.56 mi (5,292.43 km) |
| Harpenden to Central Islip (New York) | 3,409.26 mi (5,486.68 km) |
| Harpenden to Central Point (Oregon) | 5,078.28 mi (8,172.70 km) |
