| Guthrie to Popovo | 5,920.61 mi (9,528.30 km) |
| Guthrie to Provadia | 5,969.68 mi (9,607.28 km) |
| Guthrie to Radnevo | 5,963.67 mi (9,597.60 km) |
| Guthrie to Radomir | 5,846.12 mi (9,408.42 km) |
| Guthrie to Rakitovo | 5,914.60 mi (9,518.63 km) |
| Guthrie to Rakovski | 5,930.51 mi (9,544.23 km) |
| Guthrie to Razgrad | 5,920.87 mi (9,528.72 km) |
| Guthrie to Razlog | 5,897.52 mi (9,491.15 km) |
| Guthrie to Ruse | 5,887.10 mi (9,474.37 km) |
| Guthrie to Samokov | 5,878.23 mi (9,460.10 km) |
| Guthrie to Sandanski | 5,906.47 mi (9,505.54 km) |
| Guthrie to Sevlievo | 5,898.59 mi (9,492.87 km) |
| Guthrie to Shumen | 5,947.72 mi (9,571.93 km) |
| Guthrie to Silistra | 5,915.87 mi (9,520.67 km) |
| Guthrie to Sliven | 5,957.97 mi (9,588.43 km) |
