| San Luis Obispo to Rivalta di Torino | 6,013.24 mi (9,677.38 km) |
| San Luis Obispo to Rivarolo Canavese | 6,003.70 mi (9,662.03 km) |
| San Luis Obispo to Rivoli | 6,011.33 mi (9,674.30 km) |
| San Luis Obispo to Rocca di Papa | 6,351.88 mi (10,222.37 km) |
| San Luis Obispo to Rocca Priora | 6,352.49 mi (10,223.34 km) |
| San Luis Obispo to Roccapiemonte | 6,468.21 mi (10,409.58 km) |
| San Luis Obispo to Roccastrada | 6,235.76 mi (10,035.48 km) |
| San Luis Obispo to Romano di Lombardia | 6,056.03 mi (9,746.24 km) |
| San Luis Obispo to Rome | 6,337.70 mi (10,199.54 km) |
| San Luis Obispo to Roncade | 6,127.56 mi (9,861.36 km) |
| San Luis Obispo to Ronchi dei Legionari | 6,147.97 mi (9,894.20 km) |
| San Luis Obispo to Ronciglione | 6,307.53 mi (10,150.99 km) |
| San Luis Obispo to Rosa | 6,104.81 mi (9,824.74 km) |
| San Luis Obispo to Rosarno | 6,636.51 mi (10,680.43 km) |
| San Luis Obispo to Rosignano Marittimo | 6,192.81 mi (9,966.37 km) |
