| Sintra to Robertsville (New Jersey) | 3,377.80 mi (5,436.04 km) |
| Sintra to Robinson (Texas) | 4,789.15 mi (7,707.40 km) |
| Sintra to Robstown (Texas) | 4,958.71 mi (7,980.28 km) |
| Sintra to Rochester (Michigan) | 3,743.15 mi (6,024.02 km) |
| Sintra to Rochester (Minnesota) | 4,132.69 mi (6,650.91 km) |
| Sintra to Rochester (New Hampshire) | 3,151.13 mi (5,071.26 km) |
| Sintra to Rochester (New York) | 3,471.56 mi (5,586.94 km) |
| Sintra to Rochester Hills (Michigan) | 3,745.45 mi (6,027.72 km) |
| Sintra to Rock Hill (South Carolina) | 3,864.65 mi (6,219.55 km) |
| Sintra to Rock Island (Illinois) | 4,125.72 mi (6,639.71 km) |
| Sintra to Rock Springs (Wyoming) | 4,943.80 mi (7,956.27 km) |
| Sintra to Rockford (Illinois) | 4,031.49 mi (6,488.05 km) |
| Sintra to Rockledge (Florida) | 4,068.93 mi (6,548.32 km) |
| Sintra to Rocklin (California) | 5,555.95 mi (8,941.44 km) |
| Sintra to Rockport (Texas) | 4,919.51 mi (7,917.19 km) |
