| Rancho Santa Margarita to Morris (Illinois) | 1,676.57 mi (2,698.17 km) |
| Rancho Santa Margarita to Morristown (New Jersey) | 2,398.92 mi (3,860.68 km) |
| Rancho Santa Margarita to Morristown (Tennessee) | 1,941.20 mi (3,124.06 km) |
| Rancho Santa Margarita to Morrisville (North Carolina) | 2,191.99 mi (3,527.67 km) |
| Rancho Santa Margarita to Morro Bay (California) | 220.50 mi (354.86 km) |
| Rancho Santa Margarita to Morton (Illinois) | 1,615.16 mi (2,599.35 km) |
| Rancho Santa Margarita to Morton Grove (Illinois) | 1,716.82 mi (2,762.95 km) |
| Rancho Santa Margarita to Moscow (Idaho) | 905.60 mi (1,457.42 km) |
| Rancho Santa Margarita to Moses Lake (Washington) | 936.60 mi (1,507.31 km) |
| Rancho Santa Margarita to Moss Bluff (Louisiana) | 1,444.75 mi (2,325.10 km) |
| Rancho Santa Margarita to Moss Point (Mississippi) | 1,711.51 mi (2,754.41 km) |
| Rancho Santa Margarita to Moultrie (Georgia) | 1,972.18 mi (3,173.92 km) |
| Rancho Santa Margarita to Mounds View (Minnesota) | 1,516.06 mi (2,439.86 km) |
| Rancho Santa Margarita to Mount Airy (North Carolina) | 2,088.01 mi (3,360.32 km) |
| Rancho Santa Margarita to Mount Clemens (Michigan) | 1,970.38 mi (3,171.01 km) |
