| Bettendorf to Smolyan | 5,412.06 mi (8,709.87 km) |
| Bettendorf to Sofia | 5,307.82 mi (8,542.11 km) |
| Bettendorf to Sopot | 5,360.64 mi (8,627.12 km) |
| Bettendorf to Sozopol | 5,474.90 mi (8,811.00 km) |
| Bettendorf to Sredets | 5,461.13 mi (8,788.84 km) |
| Bettendorf to Stamboliyski | 5,378.70 mi (8,656.19 km) |
| Bettendorf to Stara Zagora | 5,403.08 mi (8,695.42 km) |
| Bettendorf to Svilengrad | 5,455.97 mi (8,780.54 km) |
| Bettendorf to Svishtov | 5,333.35 mi (8,583.19 km) |
| Bettendorf to Targovishte | 5,394.23 mi (8,681.17 km) |
| Bettendorf to Teteven | 5,330.36 mi (8,578.39 km) |
| Bettendorf to Troyan | 5,347.86 mi (8,606.55 km) |
| Bettendorf to Tryavna | 5,376.08 mi (8,651.97 km) |
| Bettendorf to Tutrakan | 5,354.92 mi (8,617.91 km) |
| Bettendorf to Varna | 5,441.30 mi (8,756.92 km) |
