| Silver Spring to Reading (Pennsylvania) | 109.18 mi (175.71 km) |
| Silver Spring to Red Bank (New Jersey) | 182.49 mi (293.69 km) |
| Silver Spring to Red Bank (Tennessee) | 529.28 mi (851.80 km) |
| Silver Spring to Red Bluff (California) | 2,382.82 mi (3,834.78 km) |
| Silver Spring to Red Hill (South Carolina) | 377.58 mi (607.66 km) |
| Silver Spring to Red Oak (Texas) | 1,192.10 mi (1,918.50 km) |
| Silver Spring to Red Wing (Minnesota) | 888.52 mi (1,429.93 km) |
| Silver Spring to Redan (Georgia) | 538.37 mi (866.42 km) |
| Silver Spring to Redding (California) | 2,383.11 mi (3,835.25 km) |
| Silver Spring to Redland (Maryland) | 11.29 mi (18.17 km) |
| Silver Spring to Redlands (California) | 2,237.04 mi (3,600.16 km) |
| Silver Spring to Redmond (Oregon) | 2,281.25 mi (3,671.32 km) |
| Silver Spring to Redmond (Washington) | 2,308.87 mi (3,715.77 km) |
| Silver Spring to Redondo Beach (California) | 2,306.35 mi (3,711.71 km) |
| Silver Spring to Redwood City (California) | 2,429.46 mi (3,909.83 km) |
