| Sintra to Reidsville (North Carolina) | 3,754.05 mi (6,041.56 km) |
| Sintra to Reisterstown (Maryland) | 3,524.46 mi (5,672.06 km) |
| Sintra to Rendon (Texas) | 4,751.72 mi (7,647.15 km) |
| Sintra to Reno (Nevada) | 5,465.97 mi (8,796.64 km) |
| Sintra to Renton (Washington) | 5,186.73 mi (8,347.23 km) |
| Sintra to Republic (Missouri) | 4,402.93 mi (7,085.84 km) |
| Sintra to Reston (Virginia) | 3,564.13 mi (5,735.92 km) |
| Sintra to Revere (Massachusetts) | 3,169.95 mi (5,101.54 km) |
| Sintra to Rexburg (Idaho) | 4,957.74 mi (7,978.71 km) |
| Sintra to Reynoldsburg (Ohio) | 3,802.80 mi (6,120.02 km) |
| Sintra to Rialto (California) | 5,614.09 mi (9,035.00 km) |
| Sintra to Richardson (Texas) | 4,711.32 mi (7,582.13 km) |
| Sintra to Richfield (Minnesota) | 4,141.72 mi (6,665.45 km) |
| Sintra to Richfield (Wisconsin) | 3,964.90 mi (6,380.90 km) |
| Sintra to Richland (Washington) | 5,138.19 mi (8,269.12 km) |
