| Duncan to Nyon | 5,129.81 mi (8,255.63 km) |
| Duncan to Oberriet | 5,222.24 mi (8,404.38 km) |
| Duncan to Obersiggenthal | 5,166.82 mi (8,315.20 km) |
| Duncan to Oberwil | 5,137.48 mi (8,267.97 km) |
| Duncan to Oberwingert | 5,183.84 mi (8,342.59 km) |
| Duncan to Oftringen | 5,159.13 mi (8,302.82 km) |
| Duncan to Olten | 5,157.18 mi (8,299.68 km) |
| Duncan to Onex | 5,132.23 mi (8,259.53 km) |
| Duncan to Opfikon | 5,179.45 mi (8,335.52 km) |
| Duncan to Ostermundigen | 5,156.82 mi (8,299.10 km) |
| Duncan to Payerne | 5,140.55 mi (8,272.92 km) |
| Duncan to Pfaffikon | 5,190.38 mi (8,353.11 km) |
| Duncan to Plan-les-Ouates | 5,133.53 mi (8,261.63 km) |
| Duncan to Pratteln | 5,142.94 mi (8,276.77 km) |
| Duncan to Prilly | 5,138.48 mi (8,269.59 km) |
