| Howard to Smolyan | 5,179.82 mi (8,336.12 km) |
| Howard to Sofia | 5,075.54 mi (8,168.29 km) |
| Howard to Sopot | 5,127.61 mi (8,252.09 km) |
| Howard to Sozopol | 5,240.47 mi (8,433.72 km) |
| Howard to Sredets | 5,226.99 mi (8,412.03 km) |
| Howard to Stamboliyski | 5,146.16 mi (8,281.95 km) |
| Howard to Stara Zagora | 5,169.71 mi (8,319.84 km) |
| Howard to Svilengrad | 5,222.75 mi (8,405.20 km) |
| Howard to Svishtov | 5,099.34 mi (8,206.59 km) |
| Howard to Targovishte | 5,159.84 mi (8,303.95 km) |
| Howard to Teteven | 5,097.40 mi (8,203.47 km) |
| Howard to Troyan | 5,114.68 mi (8,231.28 km) |
| Howard to Tryavna | 5,142.49 mi (8,276.04 km) |
| Howard to Tutrakan | 5,120.03 mi (8,239.89 km) |
| Howard to Varna | 5,206.29 mi (8,378.71 km) |
