| South San Francisco to Rosolini | 6,615.90 mi (10,647.26 km) |
| South San Francisco to Rossano | 6,503.13 mi (10,465.78 km) |
| South San Francisco to Rottofreno | 5,987.04 mi (9,635.21 km) |
| South San Francisco to Rovato | 5,971.42 mi (9,610.07 km) |
| South San Francisco to Roverbella | 6,009.97 mi (9,672.11 km) |
| South San Francisco to Rovereto | 5,983.07 mi (9,628.82 km) |
| South San Francisco to Rovigo | 6,049.16 mi (9,735.18 km) |
| South San Francisco to Rozzano | 5,957.43 mi (9,587.55 km) |
| South San Francisco to Rubano | 6,028.83 mi (9,702.46 km) |
| South San Francisco to Rubiera | 6,045.21 mi (9,728.83 km) |
| South San Francisco to Ruffano | 6,522.34 mi (10,496.69 km) |
| South San Francisco to Russi | 6,095.93 mi (9,810.44 km) |
| South San Francisco to Rutigliano | 6,429.68 mi (10,347.58 km) |
| South San Francisco to Ruvo di Puglia | 6,407.58 mi (10,312.00 km) |
| South San Francisco to Sabaudia | 6,300.13 mi (10,139.07 km) |
