| Berthoud to Popovo | 5,908.36 mi (9,508.58 km) |
| Berthoud to Provadia | 5,952.20 mi (9,579.14 km) |
| Berthoud to Radnevo | 5,958.91 mi (9,589.94 km) |
| Berthoud to Radomir | 5,855.15 mi (9,422.95 km) |
| Berthoud to Rakitovo | 5,921.19 mi (9,529.24 km) |
| Berthoud to Rakovski | 5,930.81 mi (9,544.71 km) |
| Berthoud to Razgrad | 5,906.14 mi (9,505.01 km) |
| Berthoud to Razlog | 5,907.85 mi (9,507.77 km) |
| Berthoud to Ruse | 5,873.59 mi (9,452.62 km) |
| Berthoud to Samokov | 5,885.45 mi (9,471.72 km) |
| Berthoud to Sandanski | 5,919.59 mi (9,526.66 km) |
| Berthoud to Sevlievo | 5,893.90 mi (9,485.32 km) |
| Berthoud to Shumen | 5,932.25 mi (9,547.04 km) |
| Berthoud to Silistra | 5,894.07 mi (9,485.59 km) |
| Berthoud to Sliven | 5,948.97 mi (9,573.94 km) |
