| Sintra to Red Bank (New Jersey) | 3,366.40 mi (5,417.70 km) |
| Sintra to Red Bank (Tennessee) | 4,073.79 mi (6,556.13 km) |
| Sintra to Red Bluff (California) | 5,530.28 mi (8,900.13 km) |
| Sintra to Red Hill (South Carolina) | 3,798.43 mi (6,112.98 km) |
| Sintra to Red Oak (Texas) | 4,732.08 mi (7,615.54 km) |
| Sintra to Red Wing (Minnesota) | 4,120.87 mi (6,631.90 km) |
| Sintra to Redan (Georgia) | 4,061.88 mi (6,536.96 km) |
| Sintra to Redding (California) | 5,516.29 mi (8,877.61 km) |
| Sintra to Redland (Maryland) | 3,549.34 mi (5,712.11 km) |
| Sintra to Redlands (California) | 5,607.75 mi (9,024.80 km) |
| Sintra to Redmond (Oregon) | 5,299.22 mi (8,528.27 km) |
| Sintra to Redmond (Washington) | 5,174.99 mi (8,328.35 km) |
| Sintra to Redondo Beach (California) | 5,668.27 mi (9,122.20 km) |
| Sintra to Redwood City (California) | 5,656.32 mi (9,102.96 km) |
| Sintra to Reedley (California) | 5,586.35 mi (8,990.36 km) |
