| Boca Raton to Popovo | 5,735.59 mi (9,230.55 km) |
| Boca Raton to Provadia | 5,793.50 mi (9,323.74 km) |
| Boca Raton to Radnevo | 5,758.64 mi (9,267.63 km) |
| Boca Raton to Radomir | 5,617.14 mi (9,039.92 km) |
| Boca Raton to Rakitovo | 5,686.74 mi (9,151.92 km) |
| Boca Raton to Rakovski | 5,716.02 mi (9,199.05 km) |
| Boca Raton to Razgrad | 5,741.55 mi (9,240.14 km) |
| Boca Raton to Razlog | 5,662.22 mi (9,112.46 km) |
| Boca Raton to Ruse | 5,707.19 mi (9,184.83 km) |
| Boca Raton to Samokov | 5,651.30 mi (9,094.89 km) |
| Boca Raton to Sandanski | 5,664.20 mi (9,115.65 km) |
| Boca Raton to Sevlievo | 5,697.64 mi (9,169.47 km) |
| Boca Raton to Shumen | 5,768.32 mi (9,283.22 km) |
| Boca Raton to Silistra | 5,753.16 mi (9,258.81 km) |
| Boca Raton to Sliven | 5,763.04 mi (9,274.71 km) |
