| Isabela to River Ridge (Louisiana) | 1,657.38 mi (2,667.30 km) |
| Isabela to Riverbank (California) | 3,490.32 mi (5,617.13 km) |
| Isabela to Riverdale (Georgia) | 1,495.16 mi (2,406.23 km) |
| Isabela to Riverdale (Illinois) | 2,007.65 mi (3,231.00 km) |
| Isabela to Riverside (California) | 3,263.93 mi (5,252.78 km) |
| Isabela to Riverside (Ohio) | 1,789.37 mi (2,879.71 km) |
| Isabela to Riverton (Utah) | 3,056.66 mi (4,919.22 km) |
| Isabela to Riverton (Wyoming) | 2,940.93 mi (4,732.96 km) |
| Isabela to Riverview (Florida) | 1,163.23 mi (1,872.04 km) |
| Isabela to Riverview (Michigan) | 1,891.25 mi (3,043.67 km) |
| Isabela to Riviera Beach (Florida) | 1,008.93 mi (1,623.71 km) |
| Isabela to Riviera Beach (Maryland) | 1,536.92 mi (2,473.44 km) |
| Isabela to Roanoke (Virginia) | 1,515.50 mi (2,438.96 km) |
| Isabela to Roanoke Rapids (North Carolina) | 1,398.32 mi (2,250.38 km) |
| Isabela to Robbinsdale (Minnesota) | 2,375.61 mi (3,823.18 km) |
