| Riverton to Karlovo | 6,089.01 mi (9,799.32 km) |
| Riverton to Karnobat | 6,146.05 mi (9,891.12 km) |
| Riverton to Kavarna | 6,131.54 mi (9,867.75 km) |
| Riverton to Kazanlak | 6,106.21 mi (9,827.00 km) |
| Riverton to Knezha | 6,019.47 mi (9,687.40 km) |
| Riverton to Kostinbrod | 6,036.18 mi (9,714.29 km) |
| Riverton to Kozloduy | 5,993.59 mi (9,645.76 km) |
| Riverton to Kyustendil | 6,052.59 mi (9,740.71 km) |
| Riverton to Levski | 6,054.88 mi (9,744.38 km) |
| Riverton to Lom | 5,977.92 mi (9,620.53 km) |
| Riverton to Lovech | 6,057.68 mi (9,748.90 km) |
| Riverton to Lukovit | 6,039.29 mi (9,719.29 km) |
| Riverton to Lyaskovets | 6,085.80 mi (9,794.15 km) |
| Riverton to Mezdra | 6,029.76 mi (9,703.96 km) |
| Riverton to Momchilgrad | 6,170.82 mi (9,930.98 km) |
