| Waltham to Owosso (Michigan) | 657.51 mi (1,058.16 km) |
| Waltham to Oxford (Alabama) | 999.25 mi (1,608.14 km) |
| Waltham to Oxford (Mississippi) | 1,131.94 mi (1,821.68 km) |
| Waltham to Oxford (Ohio) | 731.34 mi (1,176.99 km) |
| Waltham to Oxnard (California) | 2,624.65 mi (4,223.97 km) |
| Waltham to Oxon Hill (Maryland) | 390.08 mi (627.77 km) |
| Waltham to Ozark (Alabama) | 1,094.49 mi (1,761.41 km) |
| Waltham to Ozark (Missouri) | 1,221.00 mi (1,965.01 km) |
| Waltham to Pace (Florida) | 1,197.69 mi (1,927.49 km) |
| Waltham to Pacific Grove (California) | 2,690.96 mi (4,330.68 km) |
| Waltham to Pacifica (California) | 2,690.70 mi (4,330.27 km) |
| Waltham to Paducah (Kentucky) | 992.70 mi (1,597.59 km) |
| Waltham to Pahrump (Nevada) | 2,402.02 mi (3,865.69 km) |
| Waltham to Painesville (Ohio) | 515.34 mi (829.35 km) |
| Waltham to Palatine (Illinois) | 858.01 mi (1,380.84 km) |
