| Duluth to Nyon | 4,331.70 mi (6,971.20 km) |
| Duluth to Oberriet | 4,408.37 mi (7,094.58 km) |
| Duluth to Obersiggenthal | 4,355.81 mi (7,009.99 km) |
| Duluth to Oberwil | 4,328.52 mi (6,966.08 km) |
| Duluth to Oberwingert | 4,371.23 mi (7,034.82 km) |
| Duluth to Oftringen | 4,350.22 mi (7,001.00 km) |
| Duluth to Olten | 4,348.13 mi (6,997.63 km) |
| Duluth to Onex | 4,335.79 mi (6,977.78 km) |
| Duluth to Opfikon | 4,367.92 mi (7,029.49 km) |
| Duluth to Ostermundigen | 4,351.32 mi (7,002.78 km) |
| Duluth to Payerne | 4,337.60 mi (6,980.70 km) |
| Duluth to Pfaffikon | 4,378.57 mi (7,046.63 km) |
| Duluth to Plan-les-Ouates | 4,337.14 mi (6,979.96 km) |
| Duluth to Pratteln | 4,333.53 mi (6,974.14 km) |
| Duluth to Prilly | 4,338.29 mi (6,981.80 km) |
