| Willow Grove to Nyon | 3,931.52 mi (6,327.17 km) |
| Willow Grove to Oberriet | 4,044.39 mi (6,508.81 km) |
| Willow Grove to Obersiggenthal | 3,985.78 mi (6,414.50 km) |
| Willow Grove to Oberwil | 3,954.00 mi (6,363.34 km) |
| Willow Grove to Oberwingert | 4,004.84 mi (6,445.17 km) |
| Willow Grove to Oftringen | 3,975.15 mi (6,397.39 km) |
| Willow Grove to Olten | 3,973.44 mi (6,394.64 km) |
| Willow Grove to Onex | 3,931.75 mi (6,327.53 km) |
| Willow Grove to Opfikon | 3,998.93 mi (6,435.66 km) |
| Willow Grove to Ostermundigen | 3,968.01 mi (6,385.90 km) |
| Willow Grove to Payerne | 3,948.53 mi (6,354.54 km) |
| Willow Grove to Pfaffikon | 4,010.05 mi (6,453.55 km) |
| Willow Grove to Plan-les-Ouates | 3,932.96 mi (6,329.49 km) |
| Willow Grove to Pratteln | 3,960.02 mi (6,373.03 km) |
| Willow Grove to Prilly | 3,942.77 mi (6,345.28 km) |
