| Helena to Yverdon-les-Bains | 4,996.67 mi (8,041.36 km) |
| Helena to Zofingen | 5,007.80 mi (8,059.28 km) |
| Helena to Zollikon | 5,023.41 mi (8,084.39 km) |
| Helena to Zuchwil | 5,001.03 mi (8,048.38 km) |
| Helena to Zug | 5,031.07 mi (8,096.72 km) |
| Helena to Zurich | 5,020.58 mi (8,079.85 km) |
| Helena to Ra's al `Ayn | 6,417.10 mi (10,327.33 km) |
| Helena to Tall Abyad | 6,406.86 mi (10,310.85 km) |
| Helena to Acarlar | 6,094.86 mi (9,808.72 km) |
| Helena to Acigol | 6,200.71 mi (9,979.08 km) |
| Helena to Acipayam | 6,158.14 mi (9,910.57 km) |
| Helena to Adakli | 6,268.34 mi (10,087.93 km) |
| Helena to Adana | 6,316.47 mi (10,165.37 km) |
| Helena to Adilcevaz | 6,333.48 mi (10,192.75 km) |
| Helena to Adiyaman | 6,324.91 mi (10,178.95 km) |
