| Folsom to Popovo | 6,413.65 mi (10,321.77 km) |
| Folsom to Provadia | 6,449.16 mi (10,378.92 km) |
| Folsom to Radnevo | 6,472.94 mi (10,417.18 km) |
| Folsom to Radomir | 6,390.21 mi (10,284.04 km) |
| Folsom to Rakitovo | 6,451.33 mi (10,382.42 km) |
| Folsom to Rakovski | 6,452.35 mi (10,384.06 km) |
| Folsom to Razgrad | 6,408.12 mi (10,312.87 km) |
| Folsom to Razlog | 6,443.26 mi (10,369.42 km) |
| Folsom to Ruse | 6,378.11 mi (10,264.58 km) |
| Folsom to Samokov | 6,417.35 mi (10,327.73 km) |
| Folsom to Sandanski | 6,458.35 mi (10,393.70 km) |
| Folsom to Sevlievo | 6,409.76 mi (10,315.52 km) |
| Folsom to Shumen | 6,432.52 mi (10,352.15 km) |
| Folsom to Silistra | 6,386.74 mi (10,278.46 km) |
| Folsom to Sliven | 6,457.56 mi (10,392.43 km) |
