| Isabela to Robertsville (New Jersey) | 1,569.73 mi (2,526.24 km) |
| Isabela to Robinson (Texas) | 2,077.10 mi (3,342.78 km) |
| Isabela to Robstown (Texas) | 2,043.58 mi (3,288.83 km) |
| Isabela to Rochester (Michigan) | 1,918.28 mi (3,087.18 km) |
| Isabela to Rochester (Minnesota) | 2,297.60 mi (3,697.63 km) |
| Isabela to Rochester (New Hampshire) | 1,728.97 mi (2,782.50 km) |
| Isabela to Rochester (New York) | 1,813.05 mi (2,917.83 km) |
| Isabela to Rochester Hills (Michigan) | 1,918.07 mi (3,086.84 km) |
| Isabela to Rock Hill (South Carolina) | 1,423.92 mi (2,291.58 km) |
| Isabela to Rock Island (Illinois) | 2,108.61 mi (3,393.48 km) |
| Isabela to Rock Springs (Wyoming) | 2,943.74 mi (4,737.49 km) |
| Isabela to Rockford (Illinois) | 2,089.27 mi (3,362.35 km) |
| Isabela to Rockledge (Florida) | 1,101.42 mi (1,772.56 km) |
| Isabela to Rocklin (California) | 3,515.99 mi (5,658.44 km) |
| Isabela to Rockport (Texas) | 2,011.35 mi (3,236.95 km) |
