| Sintra to Camas (Washington) | 5,282.31 mi (8,501.06 km) |
| Sintra to Cambridge (Maryland) | 3,511.74 mi (5,651.59 km) |
| Sintra to Cambridge (Massachusetts) | 3,176.41 mi (5,111.94 km) |
| Sintra to Camden (Arkansas) | 4,500.61 mi (7,243.02 km) |
| Sintra to Camden (New Jersey) | 3,427.86 mi (5,516.61 km) |
| Sintra to Cameron Park (California) | 5,551.86 mi (8,934.86 km) |
| Sintra to Camp Pendleton South (California) | 5,654.72 mi (9,100.40 km) |
| Sintra to Camp Springs (Maryland) | 3,546.86 mi (5,708.11 km) |
| Sintra to Camp Verde (Arizona) | 5,352.53 mi (8,614.07 km) |
| Sintra to Campbell (California) | 5,656.05 mi (9,102.54 km) |
| Sintra to Campbellsville (Kentucky) | 4,005.28 mi (6,445.87 km) |
| Sintra to Campton Hills (Illinois) | 4,010.86 mi (6,454.85 km) |
| Sintra to Canby (Oregon) | 5,307.13 mi (8,541.01 km) |
| Sintra to Candelaria (Puerto Rico) | 3,658.91 mi (5,888.45 km) |
| Sintra to Candler-McAfee (Georgia) | 4,067.75 mi (6,546.41 km) |
