| Rio Maior to Rivalta di Torino | 927.56 mi (1,492.76 km) |
| Rio Maior to Rivarolo Canavese | 943.61 mi (1,518.59 km) |
| Rio Maior to Rivoli | 928.35 mi (1,494.03 km) |
| Rio Maior to Rocca di Papa | 1,145.87 mi (1,844.10 km) |
| Rio Maior to Rocca Priora | 1,148.47 mi (1,848.28 km) |
| Rio Maior to Roccapiemonte | 1,249.75 mi (2,011.28 km) |
| Rio Maior to Roccastrada | 1,073.04 mi (1,726.89 km) |
| Rio Maior to Romano di Lombardia | 1,041.03 mi (1,675.38 km) |
| Rio Maior to Rome | 1,134.06 mi (1,825.10 km) |
| Rio Maior to Roncade | 1,165.23 mi (1,875.25 km) |
| Rio Maior to Ronchi dei Legionari | 1,221.29 mi (1,965.47 km) |
| Rio Maior to Ronciglione | 1,121.58 mi (1,805.00 km) |
| Rio Maior to Rosa | 1,138.40 mi (1,832.08 km) |
| Rio Maior to Rosarno | 1,336.48 mi (2,150.85 km) |
| Rio Maior to Rosignano Marittimo | 1,041.77 mi (1,676.56 km) |
