| Waltham to Cedar Park (Texas) | 1,679.50 mi (2,702.90 km) |
| Waltham to Cedar Rapids (Iowa) | 1,044.26 mi (1,680.58 km) |
| Waltham to Cedarburg (Wisconsin) | 849.27 mi (1,366.76 km) |
| Waltham to Celebration (Florida) | 1,130.99 mi (1,820.16 km) |
| Waltham to Celina (Ohio) | 700.37 mi (1,127.14 km) |
| Waltham to Celina (Texas) | 1,520.71 mi (2,447.35 km) |
| Waltham to Centennial (Colorado) | 1,752.72 mi (2,820.73 km) |
| Waltham to Center Point (Alabama) | 1,032.54 mi (1,661.70 km) |
| Waltham to Centereach (New York) | 141.66 mi (227.98 km) |
| Waltham to Centerton (Arkansas) | 1,295.19 mi (2,084.40 km) |
| Waltham to Centerville (Ohio) | 698.31 mi (1,123.83 km) |
| Waltham to Centerville (Utah) | 2,080.32 mi (3,347.96 km) |
| Waltham to Central (Louisiana) | 1,364.52 mi (2,195.98 km) |
| Waltham to Central Falls (Rhode Island) | 35.32 mi (56.85 km) |
| Waltham to Central Islip (New York) | 149.93 mi (241.28 km) |
