| Ronkonkoma to Reading (Pennsylvania) | 150.50 mi (242.21 km) |
| Ronkonkoma to Red Bank (New Jersey) | 58.64 mi (94.37 km) |
| Ronkonkoma to Red Bank (Tennessee) | 769.87 mi (1,238.98 km) |
| Ronkonkoma to Red Bluff (California) | 2,546.67 mi (4,098.47 km) |
| Ronkonkoma to Red Hill (South Carolina) | 583.07 mi (938.36 km) |
| Ronkonkoma to Red Oak (Texas) | 1,424.99 mi (2,293.31 km) |
| Ronkonkoma to Red Wing (Minnesota) | 1,020.33 mi (1,642.06 km) |
| Ronkonkoma to Redan (Georgia) | 777.81 mi (1,251.76 km) |
| Ronkonkoma to Redding (California) | 2,544.79 mi (4,095.45 km) |
| Ronkonkoma to Redland (Maryland) | 242.17 mi (389.74 km) |
| Ronkonkoma to Redlands (California) | 2,435.21 mi (3,919.10 km) |
| Ronkonkoma to Redmond (Oregon) | 2,423.33 mi (3,899.97 km) |
| Ronkonkoma to Redmond (Washington) | 2,429.16 mi (3,909.36 km) |
| Ronkonkoma to Redondo Beach (California) | 2,503.65 mi (4,029.23 km) |
| Ronkonkoma to Redwood City (California) | 2,606.24 mi (4,194.34 km) |
