| Rancho Santa Margarita to Bound Brook (New Jersey) | 2,396.37 mi (3,856.59 km) |
| Rancho Santa Margarita to Bountiful (Utah) | 591.03 mi (951.17 km) |
| Rancho Santa Margarita to Bourbonnais (Illinois) | 1,702.91 mi (2,740.58 km) |
| Rancho Santa Margarita to Bowie (Maryland) | 2,285.54 mi (3,678.23 km) |
| Rancho Santa Margarita to Bowling Green (Kentucky) | 1,764.28 mi (2,839.34 km) |
| Rancho Santa Margarita to Bowling Green (Ohio) | 1,922.56 mi (3,094.06 km) |
| Rancho Santa Margarita to Box Elder (South Dakota) | 1,062.00 mi (1,709.12 km) |
| Rancho Santa Margarita to Boynton Beach (Florida) | 2,283.19 mi (3,674.44 km) |
| Rancho Santa Margarita to Bozeman (Montana) | 901.70 mi (1,451.14 km) |
| Rancho Santa Margarita to Bradenton (Florida) | 2,116.02 mi (3,405.41 km) |
| Rancho Santa Margarita to Bradfordville (Florida) | 1,957.40 mi (3,150.13 km) |
| Rancho Santa Margarita to Bradley (Illinois) | 1,704.44 mi (2,743.03 km) |
| Rancho Santa Margarita to Bradley Gardens (New Jersey) | 2,389.57 mi (3,845.65 km) |
| Rancho Santa Margarita to Brainerd (Minnesota) | 1,509.50 mi (2,429.30 km) |
| Rancho Santa Margarita to Brambleton (Virginia) | 2,242.99 mi (3,609.74 km) |
