| Waltham to Fortuna (California) | 2,695.89 mi (4,338.62 km) |
| Waltham to Fortuna Foothills (Arizona) | 2,430.12 mi (3,910.90 km) |
| Waltham to Foster City (California) | 2,681.60 mi (4,315.63 km) |
| Waltham to Fostoria (Ohio) | 632.25 mi (1,017.50 km) |
| Waltham to Fountain (Colorado) | 1,762.86 mi (2,837.04 km) |
| Waltham to Fountain Hills (Arizona) | 2,263.73 mi (3,643.12 km) |
| Waltham to Fountain Inn (South Carolina) | 794.38 mi (1,278.43 km) |
| Waltham to Fountain Valley (California) | 2,577.34 mi (4,147.84 km) |
| Waltham to Fountainebleau (Florida) | 1,258.90 mi (2,026.00 km) |
| Waltham to Four Corners (Oregon) | 2,547.62 mi (4,100.00 km) |
| Waltham to Four Corners (Texas) | 1,613.68 mi (2,596.97 km) |
| Waltham to Four Square Mile (Colorado) | 1,751.97 mi (2,819.52 km) |
| Waltham to Fox Crossing (Wisconsin) | 874.07 mi (1,406.68 km) |
| Waltham to Fox Lake (Illinois) | 862.90 mi (1,388.71 km) |
| Waltham to Framingham (Massachusetts) | 11.38 mi (18.31 km) |
