| Spout Springs to Popovo | 5,258.59 mi (8,462.89 km) |
| Spout Springs to Provadia | 5,314.14 mi (8,552.28 km) |
| Spout Springs to Radnevo | 5,288.69 mi (8,511.32 km) |
| Spout Springs to Radomir | 5,154.07 mi (8,294.67 km) |
| Spout Springs to Rakitovo | 5,224.00 mi (8,407.22 km) |
| Spout Springs to Rakovski | 5,248.90 mi (8,447.29 km) |
| Spout Springs to Razgrad | 5,262.70 mi (8,469.50 km) |
| Spout Springs to Razlog | 5,201.86 mi (8,371.59 km) |
| Spout Springs to Ruse | 5,228.18 mi (8,413.94 km) |
| Spout Springs to Samokov | 5,187.86 mi (8,349.06 km) |
| Spout Springs to Sandanski | 5,206.36 mi (8,378.82 km) |
| Spout Springs to Sevlievo | 5,225.66 mi (8,409.88 km) |
| Spout Springs to Shumen | 5,289.77 mi (8,513.07 km) |
| Spout Springs to Silistra | 5,268.93 mi (8,479.52 km) |
| Spout Springs to Sliven | 5,289.68 mi (8,512.91 km) |
