| Castel Bolognese to Rivarolo Canavese | 211.98 mi (341.15 km) |
| Castel Bolognese to Rivoli | 216.64 mi (348.66 km) |
| Castel Bolognese to Rocca di Papa | 182.16 mi (293.16 km) |
| Castel Bolognese to Rocca Priora | 181.71 mi (292.44 km) |
| Castel Bolognese to Roccapiemonte | 286.36 mi (460.85 km) |
| Castel Bolognese to Roccastrada | 95.66 mi (153.96 km) |
| Castel Bolognese to Romano di Lombardia | 130.13 mi (209.42 km) |
| Castel Bolognese to Rome | 170.96 mi (275.13 km) |
| Castel Bolognese to Roncade | 94.66 mi (152.34 km) |
| Castel Bolognese to Ronchi dei Legionari | 133.64 mi (215.07 km) |
| Castel Bolognese to Ronciglione | 141.62 mi (227.91 km) |
| Castel Bolognese to Rosa | 96.74 mi (155.69 km) |
| Castel Bolognese to Rosarno | 457.31 mi (735.97 km) |
| Castel Bolognese to Rosignano Marittimo | 91.78 mi (147.71 km) |
| Castel Bolognese to Rosolini | 543.82 mi (875.19 km) |
