| Opelika to Popovo | 5,642.37 mi (9,080.51 km) |
| Opelika to Provadia | 5,696.99 mi (9,168.41 km) |
| Opelika to Radnevo | 5,674.68 mi (9,132.52 km) |
| Opelika to Radomir | 5,542.41 mi (8,919.65 km) |
| Opelika to Rakitovo | 5,612.30 mi (9,032.12 km) |
| Opelika to Rakovski | 5,635.85 mi (9,070.03 km) |
| Opelika to Razgrad | 5,645.84 mi (9,086.11 km) |
| Opelika to Razlog | 5,590.88 mi (8,997.65 km) |
| Opelika to Ruse | 5,611.35 mi (9,030.59 km) |
| Opelika to Samokov | 5,576.03 mi (8,973.75 km) |
| Opelika to Sandanski | 5,596.06 mi (9,005.99 km) |
| Opelika to Sevlievo | 5,611.15 mi (9,030.27 km) |
| Opelika to Shumen | 5,672.96 mi (9,129.74 km) |
| Opelika to Silistra | 5,650.16 mi (9,093.05 km) |
| Opelika to Sliven | 5,674.58 mi (9,132.36 km) |
