| Waltham to Cullman (Alabama) | 1,016.05 mi (1,635.17 km) |
| Waltham to Culpeper (Virginia) | 446.55 mi (718.65 km) |
| Waltham to Culver City (California) | 2,590.68 mi (4,169.30 km) |
| Waltham to Cumberland (Maryland) | 434.85 mi (699.83 km) |
| Waltham to Cupertino (California) | 2,677.23 mi (4,308.58 km) |
| Waltham to Cutler Bay (Florida) | 1,271.21 mi (2,045.82 km) |
| Waltham to Cutlerville (Michigan) | 733.55 mi (1,180.53 km) |
| Waltham to Cuyahoga Falls (Ohio) | 535.98 mi (862.58 km) |
| Waltham to Cypress (California) | 2,578.40 mi (4,149.53 km) |
| Waltham to Cypress Gardens (Florida) | 1,153.56 mi (1,856.47 km) |
| Waltham to Cypress Lake (Florida) | 1,249.73 mi (2,011.24 km) |
| Waltham to D'Iberville (Mississippi) | 1,276.67 mi (2,054.60 km) |
| Waltham to Dakota Ridge (Colorado) | 1,765.75 mi (2,841.70 km) |
| Waltham to Dale City (Virginia) | 411.65 mi (662.48 km) |
| Waltham to Dallas (Georgia) | 940.70 mi (1,513.92 km) |
