| Gretna to Reidsville (North Carolina) | 746.17 mi (1,200.84 km) |
| Gretna to Reisterstown (Maryland) | 998.29 mi (1,606.59 km) |
| Gretna to Rendon (Texas) | 462.53 mi (744.37 km) |
| Gretna to Reno (Nevada) | 1,807.92 mi (2,909.57 km) |
| Gretna to Renton (Washington) | 2,092.12 mi (3,366.94 km) |
| Gretna to Republic (Missouri) | 536.63 mi (863.62 km) |
| Gretna to Reston (Virginia) | 954.50 mi (1,536.11 km) |
| Gretna to Revere (Massachusetts) | 1,364.00 mi (2,195.14 km) |
| Gretna to Rexburg (Idaho) | 1,530.62 mi (2,463.29 km) |
| Gretna to Reynoldsburg (Ohio) | 806.15 mi (1,297.38 km) |
| Gretna to Rialto (California) | 1,622.72 mi (2,611.52 km) |
| Gretna to Richardson (Texas) | 445.70 mi (717.29 km) |
| Gretna to Richfield (Minnesota) | 1,048.93 mi (1,688.09 km) |
| Gretna to Richfield (Wisconsin) | 926.21 mi (1,490.59 km) |
| Gretna to Richland (Washington) | 1,933.27 mi (3,111.29 km) |
