| Harlingen to Popovo | 1,166.31 mi (1,876.99 km) |
| Harlingen to Provadia | 1,218.60 mi (1,961.15 km) |
| Harlingen to Radnevo | 1,206.01 mi (1,940.88 km) |
| Harlingen to Radomir | 1,089.47 mi (1,753.33 km) |
| Harlingen to Rakitovo | 1,157.24 mi (1,862.40 km) |
| Harlingen to Rakovski | 1,172.28 mi (1,886.60 km) |
| Harlingen to Razgrad | 1,168.24 mi (1,880.09 km) |
| Harlingen to Razlog | 1,141.55 mi (1,837.14 km) |
| Harlingen to Ruse | 1,133.94 mi (1,824.90 km) |
| Harlingen to Samokov | 1,120.99 mi (1,804.07 km) |
| Harlingen to Sandanski | 1,152.01 mi (1,853.98 km) |
| Harlingen to Sevlievo | 1,141.08 mi (1,836.39 km) |
| Harlingen to Shumen | 1,195.33 mi (1,923.70 km) |
| Harlingen to Silistra | 1,169.67 mi (1,882.40 km) |
| Harlingen to Sliven | 1,201.72 mi (1,933.99 km) |
