| Littleton to Smolyan | 6,001.94 mi (9,659.19 km) |
| Littleton to Sofia | 5,898.10 mi (9,492.08 km) |
| Littleton to Sopot | 5,944.15 mi (9,566.19 km) |
| Littleton to Sozopol | 6,044.44 mi (9,727.58 km) |
| Littleton to Sredets | 6,033.71 mi (9,710.31 km) |
| Littleton to Stamboliyski | 5,966.28 mi (9,601.80 km) |
| Littleton to Stara Zagora | 5,983.26 mi (9,629.13 km) |
| Littleton to Svilengrad | 6,037.12 mi (9,715.80 km) |
| Littleton to Svishtov | 5,908.18 mi (9,508.29 km) |
| Littleton to Targovishte | 5,964.85 mi (9,599.49 km) |
| Littleton to Teteven | 5,914.75 mi (9,518.87 km) |
| Littleton to Troyan | 5,930.18 mi (9,543.70 km) |
| Littleton to Tryavna | 5,954.52 mi (9,582.88 km) |
| Littleton to Tutrakan | 5,920.68 mi (9,528.42 km) |
| Littleton to Varna | 6,005.08 mi (9,664.24 km) |
