| Waltham to Portage (Indiana) | 819.16 mi (1,318.32 km) |
| Waltham to Portage (Michigan) | 732.56 mi (1,178.94 km) |
| Waltham to Portage (Wisconsin) | 922.95 mi (1,485.34 km) |
| Waltham to Portales (New Mexico) | 1,819.30 mi (2,927.88 km) |
| Waltham to Porterville (California) | 2,560.74 mi (4,121.11 km) |
| Waltham to Portland (Maine) | 101.63 mi (163.55 km) |
| Waltham to Portland (Oregon) | 2,521.92 mi (4,058.64 km) |
| Waltham to Portland (Tennessee) | 906.12 mi (1,458.26 km) |
| Waltham to Portland (Texas) | 1,770.20 mi (2,848.86 km) |
| Waltham to Portsmouth (New Hampshire) | 51.78 mi (83.34 km) |
| Waltham to Portsmouth (Ohio) | 662.81 mi (1,066.70 km) |
| Waltham to Portsmouth (Virginia) | 469.52 mi (755.62 km) |
| Waltham to Post Falls (Idaho) | 2,227.38 mi (3,584.62 km) |
| Waltham to Potomac (Maryland) | 389.16 mi (626.29 km) |
| Waltham to Potomac Park (California) | 2,577.88 mi (4,148.69 km) |
