| Seinajoki to Popovo | 1,350.20 mi (2,172.94 km) |
| Seinajoki to Provadia | 1,367.38 mi (2,200.58 km) |
| Seinajoki to Radnevo | 1,421.39 mi (2,287.51 km) |
| Seinajoki to Radomir | 1,398.57 mi (2,250.79 km) |
| Seinajoki to Rakitovo | 1,438.61 mi (2,315.22 km) |
| Seinajoki to Rakovski | 1,419.26 mi (2,284.09 km) |
| Seinajoki to Razgrad | 1,338.78 mi (2,154.56 km) |
| Seinajoki to Razlog | 1,444.86 mi (2,325.27 km) |
| Seinajoki to Ruse | 1,316.52 mi (2,118.73 km) |
| Seinajoki to Samokov | 1,413.57 mi (2,274.93 km) |
| Seinajoki to Sandanski | 1,466.52 mi (2,360.13 km) |
| Seinajoki to Sevlievo | 1,368.78 mi (2,202.83 km) |
| Seinajoki to Shumen | 1,357.92 mi (2,185.36 km) |
| Seinajoki to Silistra | 1,302.29 mi (2,095.84 km) |
| Seinajoki to Sliven | 1,396.52 mi (2,247.49 km) |
