| Piqua to Zottegem | 4,069.19 mi (6,548.72 km) |
| Piqua to Zulte | 4,053.36 mi (6,523.25 km) |
| Piqua to Zwevegem | 4,053.07 mi (6,522.78 km) |
| Piqua to Zwijndrecht | 4,078.90 mi (6,564.35 km) |
| Piqua to Asenovgrad | 5,235.77 mi (8,426.16 km) |
| Piqua to Aytos | 5,293.74 mi (8,519.45 km) |
| Piqua to Balchik | 5,292.89 mi (8,518.08 km) |
| Piqua to Bankya | 5,138.13 mi (8,269.02 km) |
| Piqua to Bansko | 5,190.86 mi (8,353.89 km) |
| Piqua to Berkovitsa | 5,113.47 mi (8,229.33 km) |
| Piqua to Blagoevgrad | 5,167.52 mi (8,316.32 km) |
| Piqua to Botevgrad | 5,154.05 mi (8,294.64 km) |
| Piqua to Burgas | 5,311.22 mi (8,547.58 km) |
| Piqua to Byala Slatina | 5,133.97 mi (8,262.32 km) |
| Piqua to Chirpan | 5,244.77 mi (8,440.64 km) |
