| Howard to Ridgeland (Mississippi) | 846.50 mi (1,362.31 km) |
| Howard to Ridgewood (New Jersey) | 749.94 mi (1,206.92 km) |
| Howard to Rifle (Colorado) | 1,064.71 mi (1,713.49 km) |
| Howard to Rincon (Georgia) | 924.96 mi (1,488.57 km) |
| Howard to Ringwood (New Jersey) | 738.75 mi (1,188.90 km) |
| Howard to Río Grande (Puerto Rico) | 2,219.04 mi (3,571.20 km) |
| Howard to Rio Grande City (Texas) | 1,391.32 mi (2,239.11 km) |
| Howard to Rio Linda (California) | 1,756.49 mi (2,826.80 km) |
| Howard to Rio Rancho (New Mexico) | 1,171.76 mi (1,885.76 km) |
| Howard to Rio Rico (Arizona) | 1,530.22 mi (2,462.65 km) |
| Howard to Ripon (California) | 1,768.92 mi (2,846.81 km) |
| Howard to River Edge (New Jersey) | 755.02 mi (1,215.09 km) |
| Howard to River Falls (Wisconsin) | 223.38 mi (359.50 km) |
| Howard to River Forest (Illinois) | 185.36 mi (298.30 km) |
| Howard to River Grove (Illinois) | 183.27 mi (294.94 km) |
