| Tamalpais-Homestead Valley to Rivalta di Torino | 5,919.40 mi (9,526.35 km) |
| Tamalpais-Homestead Valley to Rivarolo Canavese | 5,908.90 mi (9,509.46 km) |
| Tamalpais-Homestead Valley to Rivoli | 5,917.41 mi (9,523.16 km) |
| Tamalpais-Homestead Valley to Rocca di Papa | 6,254.61 mi (10,065.82 km) |
| Tamalpais-Homestead Valley to Rocca Priora | 6,255.09 mi (10,066.59 km) |
| Tamalpais-Homestead Valley to Roccapiemonte | 6,368.83 mi (10,249.64 km) |
| Tamalpais-Homestead Valley to Roccastrada | 6,139.14 mi (9,880.00 km) |
| Tamalpais-Homestead Valley to Romano di Lombardia | 5,957.23 mi (9,587.24 km) |
| Tamalpais-Homestead Valley to Rome | 6,240.65 mi (10,043.35 km) |
| Tamalpais-Homestead Valley to Roncade | 6,023.85 mi (9,694.45 km) |
| Tamalpais-Homestead Valley to Ronchi dei Legionari | 6,041.87 mi (9,723.44 km) |
| Tamalpais-Homestead Valley to Ronciglione | 6,210.26 mi (9,994.45 km) |
| Tamalpais-Homestead Valley to Rosa | 6,002.02 mi (9,659.32 km) |
| Tamalpais-Homestead Valley to Rosarno | 6,538.49 mi (10,522.68 km) |
| Tamalpais-Homestead Valley to Rosignano Marittimo | 6,096.78 mi (9,811.82 km) |
