| Waltham to Ridgefield Park (New Jersey) | 178.39 mi (287.08 km) |
| Waltham to Ridgeland (Mississippi) | 1,240.82 mi (1,996.91 km) |
| Waltham to Ridgewood (New Jersey) | 177.14 mi (285.08 km) |
| Waltham to Rifle (Colorado) | 1,901.41 mi (3,060.03 km) |
| Waltham to Rincon (Georgia) | 886.18 mi (1,426.17 km) |
| Waltham to Ringwood (New Jersey) | 179.68 mi (289.16 km) |
| Waltham to Río Grande (Puerto Rico) | 1,688.98 mi (2,718.15 km) |
| Waltham to Rio Grande City (Texas) | 1,908.39 mi (3,071.25 km) |
| Waltham to Rio Linda (California) | 2,609.91 mi (4,200.24 km) |
| Waltham to Rio Rancho (New Mexico) | 1,954.89 mi (3,146.09 km) |
| Waltham to Rio Rico (Arizona) | 2,296.32 mi (3,695.56 km) |
| Waltham to Ripon (California) | 2,619.51 mi (4,215.70 km) |
| Waltham to River Edge (New Jersey) | 176.17 mi (283.52 km) |
| Waltham to River Falls (Wisconsin) | 1,079.75 mi (1,737.68 km) |
| Waltham to River Forest (Illinois) | 848.61 mi (1,365.71 km) |
