| Covina to Popovo | 6,627.49 mi (10,665.91 km) |
| Covina to Provadia | 6,666.64 mi (10,728.91 km) |
| Covina to Radnevo | 6,683.27 mi (10,755.68 km) |
| Covina to Radomir | 6,590.96 mi (10,607.13 km) |
| Covina to Rakitovo | 6,654.52 mi (10,709.41 km) |
| Covina to Rakovski | 6,659.34 mi (10,717.18 km) |
| Covina to Razgrad | 6,623.34 mi (10,659.23 km) |
| Covina to Razlog | 6,644.05 mi (10,692.57 km) |
| Covina to Ruse | 6,592.14 mi (10,609.02 km) |
| Covina to Samokov | 6,619.63 mi (10,653.26 km) |
| Covina to Sandanski | 6,657.68 mi (10,714.50 km) |
| Covina to Sevlievo | 6,619.07 mi (10,652.36 km) |
| Covina to Shumen | 6,648.55 mi (10,699.81 km) |
| Covina to Silistra | 6,605.75 mi (10,630.93 km) |
| Covina to Sliven | 6,670.17 mi (10,734.59 km) |
