| Herndon to Robertsville (New Jersey) | 189.78 mi (305.42 km) |
| Herndon to Robinson (Texas) | 1,225.72 mi (1,972.60 km) |
| Herndon to Robstown (Texas) | 1,396.85 mi (2,248.02 km) |
| Herndon to Rochester (Michigan) | 394.53 mi (634.93 km) |
| Herndon to Rochester (Minnesota) | 853.62 mi (1,373.77 km) |
| Herndon to Rochester (New Hampshire) | 447.71 mi (720.52 km) |
| Herndon to Rochester (New York) | 290.31 mi (467.20 km) |
| Herndon to Rochester Hills (Michigan) | 395.03 mi (635.73 km) |
| Herndon to Rock Hill (South Carolina) | 343.15 mi (552.25 km) |
| Herndon to Rock Island (Illinois) | 716.51 mi (1,153.10 km) |
| Herndon to Rock Springs (Wyoming) | 1,678.14 mi (2,700.71 km) |
| Herndon to Rockford (Illinois) | 652.60 mi (1,050.26 km) |
| Herndon to Rockledge (Florida) | 760.45 mi (1,223.83 km) |
| Herndon to Rocklin (California) | 2,335.47 mi (3,758.58 km) |
| Herndon to Rockport (Texas) | 1,358.28 mi (2,185.93 km) |
