| Waltham to Candler-McAfee (Georgia) | 925.83 mi (1,489.98 km) |
| Waltham to Caño Martin Peña (Puerto Rico) | 1,683.14 mi (2,708.75 km) |
| Waltham to Cañon City (Colorado) | 1,795.87 mi (2,890.18 km) |
| Waltham to Canóvanas (Puerto Rico) | 1,688.95 mi (2,718.10 km) |
| Waltham to Canton (Georgia) | 910.40 mi (1,465.14 km) |
| Waltham to Canton (Illinois) | 979.24 mi (1,575.94 km) |
| Waltham to Canton (Mississippi) | 1,227.99 mi (1,976.26 km) |
| Waltham to Canton (Ohio) | 534.10 mi (859.55 km) |
| Waltham to Canyon (Texas) | 1,720.83 mi (2,769.40 km) |
| Waltham to Canyon Lake (California) | 2,542.90 mi (4,092.39 km) |
| Waltham to Canyon Lake (Texas) | 1,726.94 mi (2,779.25 km) |
| Waltham to Cape Coral (Florida) | 1,245.84 mi (2,004.98 km) |
| Waltham to Cape Girardeau (Missouri) | 1,030.51 mi (1,658.45 km) |
| Waltham to Carbondale (Illinois) | 1,001.82 mi (1,612.27 km) |
| Waltham to Carlisle (Pennsylvania) | 344.32 mi (554.13 km) |
