| Petaluma to Rivalta di Torino | 5,900.93 mi (9,496.63 km) |
| Petaluma to Rivarolo Canavese | 5,890.35 mi (9,479.59 km) |
| Petaluma to Rivoli | 5,898.94 mi (9,493.43 km) |
| Petaluma to Rocca di Papa | 6,235.78 mi (10,035.52 km) |
| Petaluma to Rocca Priora | 6,236.24 mi (10,036.27 km) |
| Petaluma to Roccapiemonte | 6,349.79 mi (10,219.00 km) |
| Petaluma to Roccastrada | 6,120.39 mi (9,849.82 km) |
| Petaluma to Romano di Lombardia | 5,938.29 mi (9,556.76 km) |
| Petaluma to Rome | 6,221.84 mi (10,013.09 km) |
| Petaluma to Roncade | 6,004.45 mi (9,663.22 km) |
| Petaluma to Ronchi dei Legionari | 6,022.24 mi (9,691.86 km) |
| Petaluma to Ronciglione | 6,191.44 mi (9,964.16 km) |
| Petaluma to Rosa | 5,982.70 mi (9,628.23 km) |
| Petaluma to Rosarno | 6,519.56 mi (10,492.22 km) |
| Petaluma to Rosignano Marittimo | 6,078.08 mi (9,781.73 km) |
