| Westerville to Nyon | 4,261.90 mi (6,858.87 km) |
| Westerville to Oberriet | 4,365.09 mi (7,024.94 km) |
| Westerville to Obersiggenthal | 4,307.85 mi (6,932.81 km) |
| Westerville to Oberwil | 4,277.15 mi (6,883.41 km) |
| Westerville to Oberwingert | 4,325.98 mi (6,961.99 km) |
| Westerville to Oftringen | 4,298.61 mi (6,917.95 km) |
| Westerville to Olten | 4,296.78 mi (6,915.00 km) |
| Westerville to Onex | 4,263.23 mi (6,861.00 km) |
| Westerville to Opfikon | 4,320.78 mi (6,953.63 km) |
| Westerville to Ostermundigen | 4,293.81 mi (6,910.22 km) |
| Westerville to Payerne | 4,275.85 mi (6,881.32 km) |
| Westerville to Pfaffikon | 4,331.85 mi (6,971.43 km) |
| Westerville to Plan-les-Ouates | 4,264.49 mi (6,863.03 km) |
| Westerville to Pratteln | 4,282.92 mi (6,892.69 km) |
| Westerville to Prilly | 4,271.90 mi (6,874.96 km) |
