| Gretna to Rancho Cordova (California) | 1,869.36 mi (3,008.44 km) |
| Gretna to Rancho Cucamonga (California) | 1,632.89 mi (2,627.88 km) |
| Gretna to Rancho Mirage (California) | 1,566.51 mi (2,521.05 km) |
| Gretna to Rancho Palos Verdes (California) | 1,677.65 mi (2,699.92 km) |
| Gretna to Rancho San Diego (California) | 1,593.51 mi (2,564.51 km) |
| Gretna to Rancho Santa Margarita (California) | 1,633.50 mi (2,628.86 km) |
| Gretna to Randallstown (Maryland) | 995.33 mi (1,601.83 km) |
| Gretna to Rantoul (Illinois) | 725.99 mi (1,168.37 km) |
| Gretna to Rapid City (South Dakota) | 1,215.49 mi (1,956.15 km) |
| Gretna to Ravenna (Ohio) | 920.58 mi (1,481.54 km) |
| Gretna to Raymondville (Texas) | 526.71 mi (847.66 km) |
| Gretna to Raymore (Missouri) | 663.62 mi (1,068.00 km) |
| Gretna to Raytown (Missouri) | 675.90 mi (1,087.75 km) |
| Gretna to Reading (Ohio) | 718.16 mi (1,155.76 km) |
| Gretna to Reading (Pennsylvania) | 1,072.85 mi (1,726.58 km) |
