| Williamstown to Zottegem | 3,720.87 mi (5,988.16 km) |
| Williamstown to Zulte | 3,704.70 mi (5,962.14 km) |
| Williamstown to Zwevegem | 3,703.45 mi (5,960.12 km) |
| Williamstown to Zwijndrecht | 3,733.91 mi (6,009.15 km) |
| Williamstown to Asenovgrad | 4,888.37 mi (7,867.08 km) |
| Williamstown to Aytos | 4,956.95 mi (7,977.44 km) |
| Williamstown to Balchik | 4,962.56 mi (7,986.46 km) |
| Williamstown to Bankya | 4,789.04 mi (7,707.21 km) |
| Williamstown to Bansko | 4,838.53 mi (7,786.86 km) |
| Williamstown to Berkovitsa | 4,767.01 mi (7,671.76 km) |
| Williamstown to Blagoevgrad | 4,814.88 mi (7,748.80 km) |
| Williamstown to Botevgrad | 4,807.91 mi (7,737.58 km) |
| Williamstown to Burgas | 4,974.14 mi (8,005.10 km) |
| Williamstown to Byala Slatina | 4,791.06 mi (7,710.47 km) |
| Williamstown to Chirpan | 4,899.64 mi (7,885.21 km) |
