| Somerville to Popovo | 4,614.19 mi (7,425.82 km) |
| Somerville to Provadia | 4,669.11 mi (7,514.20 km) |
| Somerville to Radnevo | 4,646.00 mi (7,477.02 km) |
| Somerville to Radomir | 4,513.55 mi (7,263.85 km) |
| Somerville to Rakitovo | 4,583.43 mi (7,376.32 km) |
| Somerville to Rakovski | 4,607.05 mi (7,414.33 km) |
| Somerville to Razgrad | 4,617.86 mi (7,431.72 km) |
| Somerville to Razlog | 4,562.04 mi (7,341.89 km) |
| Somerville to Ruse | 4,583.35 mi (7,376.19 km) |
| Somerville to Samokov | 4,547.16 mi (7,317.95 km) |
| Somerville to Sandanski | 4,567.28 mi (7,350.33 km) |
| Somerville to Sevlievo | 4,582.55 mi (7,374.90 km) |
| Somerville to Shumen | 4,644.96 mi (7,475.34 km) |
| Somerville to Silistra | 4,622.89 mi (7,439.83 km) |
| Somerville to Sliven | 4,646.11 mi (7,477.19 km) |
