| Castel Gandolfo to Rivarolo Canavese | 349.76 mi (562.88 km) |
| Castel Gandolfo to Rivoli | 345.01 mi (555.24 km) |
| Castel Gandolfo to Rocca di Papa | 3.61 mi (5.81 km) |
| Castel Gandolfo to Rocca Priora | 6.43 mi (10.35 km) |
| Castel Gandolfo to Roccapiemonte | 126.00 mi (202.78 km) |
| Castel Gandolfo to Roccastrada | 115.52 mi (185.92 km) |
| Castel Gandolfo to Romano di Lombardia | 298.12 mi (479.77 km) |
| Castel Gandolfo to Rome | 13.34 mi (21.46 km) |
| Castel Gandolfo to Roncade | 268.28 mi (431.75 km) |
| Castel Gandolfo to Ronchi dei Legionari | 285.49 mi (459.45 km) |
| Castel Gandolfo to Ronciglione | 43.69 mi (70.31 km) |
| Castel Gandolfo to Rosa | 277.82 mi (447.11 km) |
| Castel Gandolfo to Rosarno | 285.80 mi (459.95 km) |
| Castel Gandolfo to Rosignano Marittimo | 159.39 mi (256.51 km) |
| Castel Gandolfo to Rosolini | 362.10 mi (582.74 km) |
