| Canals to Robertsville (New Jersey) | 3,801.54 mi (6,117.98 km) |
| Canals to Robinson (Texas) | 5,207.55 mi (8,380.74 km) |
| Canals to Robstown (Texas) | 5,387.43 mi (8,670.22 km) |
| Canals to Rochester (Michigan) | 4,142.97 mi (6,667.47 km) |
| Canals to Rochester (Minnesota) | 4,509.27 mi (7,256.97 km) |
| Canals to Rochester (New Hampshire) | 3,565.34 mi (5,737.87 km) |
| Canals to Rochester (New York) | 3,877.51 mi (6,240.25 km) |
| Canals to Rochester Hills (Michigan) | 4,145.32 mi (6,671.24 km) |
| Canals to Rock Hill (South Carolina) | 4,299.31 mi (6,919.07 km) |
| Canals to Rock Island (Illinois) | 4,518.07 mi (7,271.13 km) |
| Canals to Rock Springs (Wyoming) | 5,293.14 mi (8,518.48 km) |
| Canals to Rockford (Illinois) | 4,423.02 mi (7,118.17 km) |
| Canals to Rockledge (Florida) | 4,522.60 mi (7,278.42 km) |
| Canals to Rocklin (California) | 5,881.32 mi (9,465.07 km) |
| Canals to Rockport (Texas) | 5,348.67 mi (8,607.85 km) |
