| South San Francisco to Reading (Pennsylvania) | 2,474.72 mi (3,982.67 km) |
| South San Francisco to Red Bank (New Jersey) | 2,570.55 mi (4,136.91 km) |
| South San Francisco to Red Bank (Tennessee) | 2,059.01 mi (3,313.66 km) |
| South San Francisco to Red Bluff (California) | 174.36 mi (280.60 km) |
| South San Francisco to Red Hill (South Carolina) | 2,428.19 mi (3,907.80 km) |
| South San Francisco to Red Oak (Texas) | 1,486.88 mi (2,392.90 km) |
| South San Francisco to Red Wing (Minnesota) | 1,613.80 mi (2,597.16 km) |
| South San Francisco to Redan (Georgia) | 2,148.63 mi (3,457.89 km) |
| South San Francisco to Redding (California) | 201.50 mi (324.28 km) |
| South San Francisco to Redland (Maryland) | 2,428.12 mi (3,907.69 km) |
| South San Francisco to Redlands (California) | 385.04 mi (619.66 km) |
| South San Francisco to Redmond (Oregon) | 461.06 mi (742.01 km) |
| South San Francisco to Redmond (Washington) | 692.66 mi (1,114.72 km) |
| South San Francisco to Redondo Beach (California) | 346.60 mi (557.80 km) |
| South San Francisco to Redwood City (California) | 14.92 mi (24.00 km) |
