| Preakness to Nyon | 3,861.70 mi (6,214.81 km) |
| Preakness to Oberriet | 3,973.94 mi (6,395.44 km) |
| Preakness to Obersiggenthal | 3,915.41 mi (6,301.25 km) |
| Preakness to Oberwil | 3,883.69 mi (6,250.19 km) |
| Preakness to Oberwingert | 3,934.42 mi (6,331.84 km) |
| Preakness to Oftringen | 3,904.87 mi (6,284.28 km) |
| Preakness to Olten | 3,903.15 mi (6,281.52 km) |
| Preakness to Onex | 3,862.01 mi (6,215.31 km) |
| Preakness to Opfikon | 3,928.55 mi (6,322.39 km) |
| Preakness to Ostermundigen | 3,897.88 mi (6,273.03 km) |
| Preakness to Payerne | 3,878.50 mi (6,241.84 km) |
| Preakness to Pfaffikon | 3,939.67 mi (6,340.28 km) |
| Preakness to Plan-les-Ouates | 3,863.23 mi (6,217.27 km) |
| Preakness to Pratteln | 3,889.69 mi (6,259.86 km) |
| Preakness to Prilly | 3,872.87 mi (6,232.78 km) |
