| Howard to Rockville (Maryland) | 677.92 mi (1,091.01 km) |
| Howard to Rockville Centre (New York) | 781.61 mi (1,257.88 km) |
| Howard to Rockwall (Texas) | 921.05 mi (1,482.29 km) |
| Howard to Rocky Mount (North Carolina) | 803.35 mi (1,292.86 km) |
| Howard to Rocky Point (New York) | 807.49 mi (1,299.54 km) |
| Howard to Rocky River (Ohio) | 380.94 mi (613.06 km) |
| Howard to Roessleville (New York) | 725.56 mi (1,167.68 km) |
| Howard to Rogers (Arkansas) | 652.79 mi (1,050.56 km) |
| Howard to Rogers (Minnesota) | 271.87 mi (437.53 km) |
| Howard to Rohnert Park (California) | 1,827.95 mi (2,941.80 km) |
| Howard to Rolla (Missouri) | 495.63 mi (797.64 km) |
| Howard to Rolling Meadows (Illinois) | 172.46 mi (277.55 km) |
| Howard to Roma (Texas) | 1,393.47 mi (2,242.58 km) |
| Howard to Rome (Georgia) | 728.52 mi (1,172.43 km) |
| Howard to Rome (New York) | 633.59 mi (1,019.66 km) |
