| Cave Spring to Popovo | 5,204.45 mi (8,375.75 km) |
| Cave Spring to Provadia | 5,259.04 mi (8,463.61 km) |
| Cave Spring to Radnevo | 5,236.92 mi (8,428.00 km) |
| Cave Spring to Radomir | 5,104.98 mi (8,215.68 km) |
| Cave Spring to Rakitovo | 5,174.85 mi (8,328.12 km) |
| Cave Spring to Rakovski | 5,198.20 mi (8,365.69 km) |
| Cave Spring to Razgrad | 5,207.90 mi (8,381.31 km) |
| Cave Spring to Razlog | 5,153.58 mi (8,293.88 km) |
| Cave Spring to Ruse | 5,173.41 mi (8,325.80 km) |
| Cave Spring to Samokov | 5,138.57 mi (8,269.72 km) |
| Cave Spring to Sandanski | 5,158.91 mi (8,302.46 km) |
| Cave Spring to Sevlievo | 5,173.34 mi (8,325.68 km) |
| Cave Spring to Shumen | 5,235.02 mi (8,424.95 km) |
| Cave Spring to Silistra | 5,212.22 mi (8,388.26 km) |
| Cave Spring to Sliven | 5,236.72 mi (8,427.69 km) |
