| Ludwigsburg to Rockville (Maryland) | 4,110.88 mi (6,615.83 km) |
| Ludwigsburg to Rockville Centre (New York) | 3,897.49 mi (6,272.40 km) |
| Ludwigsburg to Rockwall (Texas) | 5,173.86 mi (8,326.52 km) |
| Ludwigsburg to Rocky Mount (North Carolina) | 4,279.34 mi (6,886.93 km) |
| Ludwigsburg to Rocky Point (New York) | 3,857.05 mi (6,207.33 km) |
| Ludwigsburg to Rocky River (Ohio) | 4,191.01 mi (6,744.78 km) |
| Ludwigsburg to Roessleville (New York) | 3,817.56 mi (6,143.77 km) |
| Ludwigsburg to Rogers (Arkansas) | 4,912.12 mi (7,905.30 km) |
| Ludwigsburg to Rogers (Minnesota) | 4,449.37 mi (7,160.56 km) |
| Ludwigsburg to Rohnert Park (California) | 5,729.14 mi (9,220.15 km) |
| Ludwigsburg to Rolla (Missouri) | 4,739.87 mi (7,628.09 km) |
| Ludwigsburg to Rolling Meadows (Illinois) | 4,398.75 mi (7,079.10 km) |
| Ludwigsburg to Roma (Texas) | 5,616.85 mi (9,039.45 km) |
| Ludwigsburg to Rome (Georgia) | 4,663.34 mi (7,504.92 km) |
| Ludwigsburg to Rome (New York) | 3,863.13 mi (6,217.11 km) |
