| Harpenden to Camas (Washington) | 4,879.00 mi (7,851.99 km) |
| Harpenden to Cambridge (Maryland) | 3,625.85 mi (5,835.25 km) |
| Harpenden to Cambridge (Massachusetts) | 3,256.97 mi (5,241.59 km) |
| Harpenden to Camden (Arkansas) | 4,536.45 mi (7,300.71 km) |
| Harpenden to Camden (New Jersey) | 3,524.25 mi (5,671.74 km) |
| Harpenden to Cameron Park (California) | 5,237.44 mi (8,428.85 km) |
| Harpenden to Camp Pendleton South (California) | 5,438.57 mi (8,752.53 km) |
| Harpenden to Camp Springs (Maryland) | 3,648.62 mi (5,871.89 km) |
| Harpenden to Camp Verde (Arizona) | 5,179.57 mi (8,335.71 km) |
| Harpenden to Campbell (California) | 5,346.87 mi (8,604.96 km) |
| Harpenden to Campbellsville (Kentucky) | 4,055.11 mi (6,526.07 km) |
| Harpenden to Campton Hills (Illinois) | 3,955.54 mi (6,365.83 km) |
| Harpenden to Canby (Oregon) | 4,905.17 mi (7,894.11 km) |
| Harpenden to Candelaria (Puerto Rico) | 4,200.23 mi (6,759.61 km) |
| Harpenden to Candler-McAfee (Georgia) | 4,187.10 mi (6,738.49 km) |
