| Potters Bar to Bicaz | 1,221.57 mi (1,965.93 km) |
| Potters Bar to Bistrita | 1,147.22 mi (1,846.28 km) |
| Potters Bar to Blaj | 1,152.02 mi (1,854.00 km) |
| Potters Bar to Bocsa | 1,087.35 mi (1,749.92 km) |
| Potters Bar to Boldesti-Scaeni | 1,279.93 mi (2,059.85 km) |
| Potters Bar to Bolintin Vale | 1,289.40 mi (2,075.09 km) |
| Potters Bar to Borsa | 1,139.36 mi (1,833.63 km) |
| Potters Bar to Botosani | 1,222.60 mi (1,967.58 km) |
| Potters Bar to Brad | 1,106.19 mi (1,780.24 km) |
| Potters Bar to Bragadiru | 1,301.31 mi (2,094.26 km) |
| Potters Bar to Braila | 1,353.14 mi (2,177.67 km) |
| Potters Bar to Brasov | 1,240.69 mi (1,996.70 km) |
| Potters Bar to Breaza | 1,258.97 mi (2,026.11 km) |
| Potters Bar to Bucharest | 1,304.44 mi (2,099.30 km) |
| Potters Bar to Buftea | 1,292.99 mi (2,080.86 km) |
