| Helena to Nyon | 5,005.52 mi (8,055.61 km) |
| Helena to Oberriet | 5,053.30 mi (8,132.50 km) |
| Helena to Obersiggenthal | 5,007.26 mi (8,058.41 km) |
| Helena to Oberwil | 4,984.31 mi (8,021.48 km) |
| Helena to Oberwingert | 5,019.44 mi (8,078.01 km) |
| Helena to Oftringen | 5,005.52 mi (8,055.60 km) |
| Helena to Olten | 5,003.23 mi (8,051.92 km) |
| Helena to Onex | 5,012.15 mi (8,066.28 km) |
| Helena to Opfikon | 5,018.13 mi (8,075.90 km) |
| Helena to Ostermundigen | 5,012.45 mi (8,066.75 km) |
| Helena to Payerne | 5,003.36 mi (8,052.13 km) |
| Helena to Pfaffikon | 5,028.02 mi (8,091.81 km) |
| Helena to Plan-les-Ouates | 5,013.55 mi (8,068.53 km) |
| Helena to Pratteln | 4,988.40 mi (8,028.05 km) |
| Helena to Prilly | 5,008.56 mi (8,060.51 km) |
