| Allentown to Rancho Cordova (California) | 2,413.98 mi (3,884.92 km) |
| Allentown to Rancho Cucamonga (California) | 2,331.64 mi (3,752.41 km) |
| Allentown to Rancho Mirage (California) | 2,281.98 mi (3,672.49 km) |
| Allentown to Rancho Palos Verdes (California) | 2,383.73 mi (3,836.24 km) |
| Allentown to Rancho San Diego (California) | 2,336.79 mi (3,760.70 km) |
| Allentown to Rancho Santa Margarita (California) | 2,347.15 mi (3,777.37 km) |
| Allentown to Randallstown (Maryland) | 109.92 mi (176.90 km) |
| Allentown to Rantoul (Illinois) | 666.39 mi (1,072.45 km) |
| Allentown to Rapid City (South Dakota) | 1,430.28 mi (2,301.82 km) |
| Allentown to Ravenna (Ohio) | 303.72 mi (488.78 km) |
| Allentown to Raymondville (Texas) | 1,604.86 mi (2,582.77 km) |
| Allentown to Raymore (Missouri) | 1,014.71 mi (1,633.01 km) |
| Allentown to Raytown (Missouri) | 1,012.11 mi (1,628.83 km) |
| Allentown to Reading (Ohio) | 483.88 mi (778.73 km) |
| Allentown to Reading (Pennsylvania) | 29.59 mi (47.61 km) |
