| Sintra to Iselin (New Jersey) | 3,373.40 mi (5,428.97 km) |
| Sintra to Isla Vista (California) | 5,705.35 mi (9,181.87 km) |
| Sintra to Issaquah (Washington) | 5,178.68 mi (8,334.28 km) |
| Sintra to Ithaca (New York) | 3,435.34 mi (5,528.64 km) |
| Sintra to Ives Estates (Florida) | 4,123.56 mi (6,636.23 km) |
| Sintra to Jackson (Michigan) | 3,815.37 mi (6,140.24 km) |
| Sintra to Jackson (Mississippi) | 4,414.81 mi (7,104.95 km) |
| Sintra to Jackson (Missouri) | 4,213.26 mi (6,780.58 km) |
| Sintra to Jackson (Tennessee) | 4,230.97 mi (6,809.08 km) |
| Sintra to Jackson (Wyoming) | 4,931.26 mi (7,936.10 km) |
| Sintra to Jacksonville (Alabama) | 4,139.70 mi (6,662.20 km) |
| Sintra to Jacksonville (Arkansas) | 4,418.76 mi (7,111.31 km) |
| Sintra to Jacksonville (Florida) | 4,048.45 mi (6,515.35 km) |
| Sintra to Jacksonville (Illinois) | 4,164.43 mi (6,702.01 km) |
| Sintra to Jacksonville (North Carolina) | 3,686.52 mi (5,932.88 km) |
