| Opava to Black Forest (Colorado) | 5,367.95 mi (8,638.88 km) |
| Opava to Blackfoot (Idaho) | 5,337.51 mi (8,589.89 km) |
| Opava to Blackhawk (California) | 5,898.02 mi (9,491.94 km) |
| Opava to Blacksburg (Virginia) | 4,637.61 mi (7,463.51 km) |
| Opava to Blackwells Mills (New Jersey) | 4,256.92 mi (6,850.85 km) |
| Opava to Blaine (Minnesota) | 4,678.10 mi (7,528.67 km) |
| Opava to Bloomingdale (Florida) | 5,187.60 mi (8,348.63 km) |
| Opava to Bloomingdale (Illinois) | 4,676.46 mi (7,526.03 km) |
| Opava to Bloomington (California) | 6,021.94 mi (9,691.38 km) |
| Opava to Bloomington (Illinois) | 4,783.02 mi (7,697.52 km) |
| Opava to Bloomington (Indiana) | 4,764.79 mi (7,668.19 km) |
| Opava to Bloomington (Minnesota) | 4,699.34 mi (7,562.85 km) |
| Opava to Bloomsburg (Pennsylvania) | 4,302.86 mi (6,924.79 km) |
| Opava to Blue Ash (Ohio) | 4,683.20 mi (7,536.89 km) |
| Opava to Blue Island (Illinois) | 4,677.36 mi (7,527.48 km) |
