| Whittlesey to Popovo | 1,365.08 mi (2,196.88 km) |
| Whittlesey to Provadia | 1,420.28 mi (2,285.73 km) |
| Whittlesey to Radnevo | 1,398.02 mi (2,249.90 km) |
| Whittlesey to Radomir | 1,270.58 mi (2,044.80 km) |
| Whittlesey to Rakitovo | 1,339.98 mi (2,156.49 km) |
| Whittlesey to Rakovski | 1,360.50 mi (2,189.52 km) |
| Whittlesey to Razgrad | 1,368.90 mi (2,203.03 km) |
| Whittlesey to Razlog | 1,320.90 mi (2,125.78 km) |
| Whittlesey to Ruse | 1,334.38 mi (2,147.48 km) |
| Whittlesey to Samokov | 1,303.53 mi (2,097.84 km) |
| Whittlesey to Sandanski | 1,328.56 mi (2,138.12 km) |
| Whittlesey to Sevlievo | 1,334.12 mi (2,147.05 km) |
| Whittlesey to Shumen | 1,395.99 mi (2,246.62 km) |
| Whittlesey to Silistra | 1,375.56 mi (2,213.75 km) |
| Whittlesey to Sliven | 1,397.24 mi (2,248.64 km) |
