| Mason City to Devnya | 5,436.14 mi (8,748.61 km) |
| Mason City to Dimitrovgrad | 5,433.12 mi (8,743.76 km) |
| Mason City to Dobrich | 5,426.07 mi (8,732.42 km) |
| Mason City to Dospat | 5,405.49 mi (8,699.29 km) |
| Mason City to Dupnitsa | 5,337.92 mi (8,590.55 km) |
| Mason City to Elhovo | 5,459.13 mi (8,785.61 km) |
| Mason City to Etropole | 5,338.66 mi (8,591.75 km) |
| Mason City to Gabrovo | 5,381.54 mi (8,660.75 km) |
| Mason City to Gorna Oryahovitsa | 5,379.74 mi (8,657.85 km) |
| Mason City to Gotse Delchev | 5,394.94 mi (8,682.32 km) |
| Mason City to Harmanli | 5,449.27 mi (8,769.75 km) |
| Mason City to Haskovo | 5,438.12 mi (8,751.80 km) |
| Mason City to Ihtiman | 5,352.87 mi (8,614.61 km) |
| Mason City to Isperih | 5,386.03 mi (8,667.98 km) |
| Mason City to Kardzhali | 5,446.22 mi (8,764.85 km) |
