| Willoughby to Nyon | 4,135.04 mi (6,654.70 km) |
| Willoughby to Oberriet | 4,236.97 mi (6,818.75 km) |
| Willoughby to Obersiggenthal | 4,179.91 mi (6,726.91 km) |
| Willoughby to Oberwil | 4,149.35 mi (6,677.73 km) |
| Willoughby to Oberwingert | 4,197.92 mi (6,755.91 km) |
| Willoughby to Oftringen | 4,170.84 mi (6,712.32 km) |
| Willoughby to Olten | 4,168.99 mi (6,709.35 km) |
| Willoughby to Onex | 4,136.52 mi (6,657.08 km) |
| Willoughby to Opfikon | 4,192.81 mi (6,747.68 km) |
| Willoughby to Ostermundigen | 4,166.33 mi (6,705.06 km) |
| Willoughby to Payerne | 4,148.57 mi (6,676.48 km) |
| Willoughby to Pfaffikon | 4,203.86 mi (6,765.46 km) |
| Willoughby to Plan-les-Ouates | 4,137.79 mi (6,659.12 km) |
| Willoughby to Pratteln | 4,155.08 mi (6,686.96 km) |
| Willoughby to Prilly | 4,144.86 mi (6,670.51 km) |
