| Upper Grand Lagoon to Popovo | 5,783.10 mi (9,307.00 km) |
| Upper Grand Lagoon to Provadia | 5,838.42 mi (9,396.03 km) |
| Upper Grand Lagoon to Radnevo | 5,813.66 mi (9,356.18 km) |
| Upper Grand Lagoon to Radomir | 5,679.36 mi (9,140.05 km) |
| Upper Grand Lagoon to Rakitovo | 5,749.29 mi (9,252.60 km) |
| Upper Grand Lagoon to Rakovski | 5,774.03 mi (9,292.40 km) |
| Upper Grand Lagoon to Razgrad | 5,787.05 mi (9,313.36 km) |
| Upper Grand Lagoon to Razlog | 5,727.22 mi (9,217.08 km) |
| Upper Grand Lagoon to Ruse | 5,752.53 mi (9,257.81 km) |
| Upper Grand Lagoon to Samokov | 5,713.14 mi (9,194.41 km) |
| Upper Grand Lagoon to Sandanski | 5,731.76 mi (9,224.38 km) |
| Upper Grand Lagoon to Sevlievo | 5,750.53 mi (9,254.58 km) |
| Upper Grand Lagoon to Shumen | 5,814.14 mi (9,356.95 km) |
| Upper Grand Lagoon to Silistra | 5,792.76 mi (9,322.54 km) |
| Upper Grand Lagoon to Sliven | 5,814.44 mi (9,357.43 km) |
