| Citrus Heights to Popovo | 6,414.95 mi (10,323.86 km) |
| Citrus Heights to Provadia | 6,450.36 mi (10,380.85 km) |
| Citrus Heights to Radnevo | 6,474.33 mi (10,419.42 km) |
| Citrus Heights to Radomir | 6,391.86 mi (10,286.70 km) |
| Citrus Heights to Rakitovo | 6,452.91 mi (10,384.96 km) |
| Citrus Heights to Rakovski | 6,453.84 mi (10,386.44 km) |
| Citrus Heights to Razgrad | 6,409.38 mi (10,314.91 km) |
| Citrus Heights to Razlog | 6,444.90 mi (10,372.07 km) |
| Citrus Heights to Ruse | 6,379.41 mi (10,266.67 km) |
| Citrus Heights to Samokov | 6,418.96 mi (10,330.32 km) |
| Citrus Heights to Sandanski | 6,460.03 mi (10,396.41 km) |
| Citrus Heights to Sevlievo | 6,411.19 mi (10,317.81 km) |
| Citrus Heights to Shumen | 6,433.76 mi (10,354.14 km) |
| Citrus Heights to Silistra | 6,387.90 mi (10,280.33 km) |
| Citrus Heights to Sliven | 6,458.89 mi (10,394.57 km) |
