| Castelo Branco to Morristown (New Jersey) | 3,439.11 mi (5,534.71 km) |
| Castelo Branco to Morristown (Tennessee) | 4,005.81 mi (6,446.74 km) |
| Castelo Branco to Morrisville (North Carolina) | 3,797.19 mi (6,110.99 km) |
| Castelo Branco to Morro Bay (California) | 5,732.58 mi (9,225.70 km) |
| Castelo Branco to Morton (Illinois) | 4,153.32 mi (6,684.13 km) |
| Castelo Branco to Morton Grove (Illinois) | 4,030.16 mi (6,485.92 km) |
| Castelo Branco to Moscow (Idaho) | 5,051.45 mi (8,129.53 km) |
| Castelo Branco to Moses Lake (Washington) | 5,113.81 mi (8,229.89 km) |
| Castelo Branco to Moss Bluff (Louisiana) | 4,706.20 mi (7,573.89 km) |
| Castelo Branco to Moss Point (Mississippi) | 4,469.52 mi (7,193.00 km) |
| Castelo Branco to Moultrie (Georgia) | 4,203.34 mi (6,764.63 km) |
| Castelo Branco to Mounds View (Minnesota) | 4,172.04 mi (6,714.25 km) |
| Castelo Branco to Mount Airy (North Carolina) | 3,864.07 mi (6,218.62 km) |
| Castelo Branco to Mount Clemens (Michigan) | 3,787.91 mi (6,096.06 km) |
| Castelo Branco to Mount Dora (Florida) | 4,179.31 mi (6,725.95 km) |
