| Waltham to Kalispell (Montana) | 2,103.50 mi (3,385.25 km) |
| Waltham to Kaneohe (Hawaii) | 5,064.14 mi (8,149.95 km) |
| Waltham to Kankakee (Illinois) | 860.09 mi (1,384.19 km) |
| Waltham to Kannapolis (North Carolina) | 694.36 mi (1,117.46 km) |
| Waltham to Kansas City (Kansas) | 1,246.39 mi (2,005.86 km) |
| Waltham to Kansas City (Missouri) | 1,236.68 mi (1,990.25 km) |
| Waltham to Kapaa (Hawaii) | 5,110.96 mi (8,225.29 km) |
| Waltham to Kapolei (Hawaii) | 5,080.80 mi (8,176.75 km) |
| Waltham to Katy (Texas) | 1,616.55 mi (2,601.59 km) |
| Waltham to Kaukauna (Wisconsin) | 863.74 mi (1,390.06 km) |
| Waltham to Kaysville (Utah) | 2,081.40 mi (3,349.70 km) |
| Waltham to Kearney (Missouri) | 1,221.93 mi (1,966.51 km) |
| Waltham to Kearney (Nebraska) | 1,437.97 mi (2,314.18 km) |
| Waltham to Kearns (Utah) | 2,092.06 mi (3,366.85 km) |
| Waltham to Kearny (New Jersey) | 186.82 mi (300.66 km) |
