| Herndon to Ridgeland (Mississippi) | 845.68 mi (1,361.00 km) |
| Herndon to Ridgewood (New Jersey) | 222.18 mi (357.57 km) |
| Herndon to Rifle (Colorado) | 1,618.46 mi (2,604.66 km) |
| Herndon to Rincon (Georgia) | 509.20 mi (819.48 km) |
| Herndon to Ringwood (New Jersey) | 221.08 mi (355.80 km) |
| Herndon to Río Grande (Puerto Rico) | 1,582.30 mi (2,546.46 km) |
| Herndon to Rio Grande City (Texas) | 1,513.70 mi (2,436.07 km) |
| Herndon to Rio Linda (California) | 2,347.61 mi (3,778.11 km) |
| Herndon to Rio Rancho (New Mexico) | 1,627.42 mi (2,619.08 km) |
| Herndon to Rio Rico (Arizona) | 1,953.24 mi (3,143.43 km) |
| Herndon to Ripon (California) | 2,348.60 mi (3,779.70 km) |
| Herndon to River Edge (New Jersey) | 222.98 mi (358.85 km) |
| Herndon to River Falls (Wisconsin) | 880.91 mi (1,417.69 km) |
| Herndon to River Forest (Illinois) | 584.24 mi (940.24 km) |
| Herndon to River Grove (Illinois) | 585.73 mi (942.65 km) |
