| Round Rock to Bucak | 6,672.55 mi (10,738.44 km) |
| Round Rock to Buharkent | 6,577.64 mi (10,585.68 km) |
| Round Rock to Bulancak | 6,752.51 mi (10,867.12 km) |
| Round Rock to Bulanik | 6,980.36 mi (11,233.80 km) |
| Round Rock to Buldan | 6,576.85 mi (10,584.42 km) |
| Round Rock to Bunyan | 6,787.93 mi (10,924.11 km) |
| Round Rock to Burdur | 6,647.76 mi (10,698.53 km) |
| Round Rock to Burhaniye | 6,434.14 mi (10,354.75 km) |
| Round Rock to Bursa | 6,478.58 mi (10,426.28 km) |
| Round Rock to Buyukcekmece | 6,419.76 mi (10,331.60 km) |
| Round Rock to Buyukorhan | 6,495.29 mi (10,453.15 km) |
| Round Rock to Buyukyoncali | 6,378.40 mi (10,265.05 km) |
| Round Rock to Caglayancerit | 6,895.74 mi (11,097.61 km) |
| Round Rock to Cal | 6,596.35 mi (10,615.80 km) |
| Round Rock to Caldiran | 7,026.74 mi (11,308.45 km) |
