| Harlingen to Devnya | 1,222.05 mi (1,966.69 km) |
| Harlingen to Dimitrovgrad | 1,206.58 mi (1,941.81 km) |
| Harlingen to Dobrich | 1,216.07 mi (1,957.08 km) |
| Harlingen to Dospat | 1,177.35 mi (1,894.77 km) |
| Harlingen to Dupnitsa | 1,109.92 mi (1,786.25 km) |
| Harlingen to Elhovo | 1,235.31 mi (1,988.05 km) |
| Harlingen to Etropole | 1,111.15 mi (1,788.22 km) |
| Harlingen to Gabrovo | 1,156.71 mi (1,861.55 km) |
| Harlingen to Gorna Oryahovitsa | 1,157.07 mi (1,862.12 km) |
| Harlingen to Gotse Delchev | 1,167.10 mi (1,878.27 km) |
| Harlingen to Harmanli | 1,223.04 mi (1,968.30 km) |
| Harlingen to Haskovo | 1,211.27 mi (1,949.35 km) |
| Harlingen to Ihtiman | 1,124.79 mi (1,810.18 km) |
| Harlingen to Isperih | 1,171.61 mi (1,885.52 km) |
| Harlingen to Kardzhali | 1,218.62 mi (1,961.18 km) |
