| Niederkassel to Bel Air (Maryland) | 3,914.92 mi (6,300.46 km) |
| Niederkassel to Bel Air North (Maryland) | 3,915.12 mi (6,300.78 km) |
| Niederkassel to Bel Air South (Maryland) | 3,915.02 mi (6,300.62 km) |
| Niederkassel to Belgrade (Montana) | 4,814.57 mi (7,748.30 km) |
| Niederkassel to Bell (California) | 5,697.80 mi (9,169.73 km) |
| Niederkassel to Bell Gardens (California) | 5,697.88 mi (9,169.85 km) |
| Niederkassel to Bella Vista (Arkansas) | 4,755.82 mi (7,653.74 km) |
| Niederkassel to Bellair-Meadowbrook Terrace (Florida) | 4,583.33 mi (7,376.15 km) |
| Niederkassel to Bellaire (Texas) | 5,155.18 mi (8,296.46 km) |
| Niederkassel to Belle Chasse (Louisiana) | 4,934.19 mi (7,940.82 km) |
| Niederkassel to Belle Glade (Florida) | 4,714.40 mi (7,587.10 km) |
| Niederkassel to Bellefontaine (Ohio) | 4,167.04 mi (6,706.21 km) |
| Niederkassel to Bellefontaine Neighbors (Missouri) | 4,489.72 mi (7,225.51 km) |
| Niederkassel to Belleville (Illinois) | 4,492.64 mi (7,230.20 km) |
| Niederkassel to Bellevue (Nebraska) | 4,575.26 mi (7,363.18 km) |
