| Helston to Nyon | 587.49 mi (945.47 km) |
| Helston to Oberriet | 701.92 mi (1,129.64 km) |
| Helston to Obersiggenthal | 642.13 mi (1,033.41 km) |
| Helston to Oberwil | 609.44 mi (980.80 km) |
| Helston to Oberwingert | 662.15 mi (1,065.63 km) |
| Helston to Oftringen | 630.25 mi (1,014.29 km) |
| Helston to Olten | 628.65 mi (1,011.71 km) |
| Helston to Onex | 589.09 mi (948.05 km) |
| Helston to Opfikon | 655.43 mi (1,054.80 km) |
| Helston to Ostermundigen | 622.00 mi (1,001.01 km) |
| Helston to Payerne | 602.53 mi (969.68 km) |
| Helston to Pfaffikon | 666.54 mi (1,072.69 km) |
| Helston to Plan-les-Ouates | 590.37 mi (950.11 km) |
| Helston to Pratteln | 615.66 mi (990.81 km) |
| Helston to Prilly | 597.61 mi (961.76 km) |
