| Castel Gandolfo to Ridgeland (Mississippi) | 5,350.51 mi (8,610.82 km) |
| Castel Gandolfo to Ridgewood (New Jersey) | 4,288.31 mi (6,901.37 km) |
| Castel Gandolfo to Rifle (Colorado) | 5,692.46 mi (9,161.13 km) |
| Castel Gandolfo to Rincon (Georgia) | 4,958.18 mi (7,979.43 km) |
| Castel Gandolfo to Ringwood (New Jersey) | 4,290.81 mi (6,905.39 km) |
| Castel Gandolfo to Río Grande (Puerto Rico) | 4,797.74 mi (7,721.21 km) |
| Castel Gandolfo to Rio Grande City (Texas) | 6,015.71 mi (9,681.35 km) |
| Castel Gandolfo to Rio Linda (California) | 6,175.00 mi (9,937.70 km) |
| Castel Gandolfo to Rio Rancho (New Mexico) | 5,876.98 mi (9,458.08 km) |
| Castel Gandolfo to Rio Rico (Arizona) | 6,236.49 mi (10,036.66 km) |
| Castel Gandolfo to Ripon (California) | 6,221.05 mi (10,011.81 km) |
| Castel Gandolfo to River Edge (New Jersey) | 4,287.10 mi (6,899.43 km) |
| Castel Gandolfo to River Falls (Wisconsin) | 4,885.64 mi (7,862.68 km) |
| Castel Gandolfo to River Forest (Illinois) | 4,829.48 mi (7,772.30 km) |
| Castel Gandolfo to River Grove (Illinois) | 4,828.96 mi (7,771.46 km) |
