| North Chicago to Nyon | 4,366.17 mi (7,026.67 km) |
| North Chicago to Oberriet | 4,458.27 mi (7,174.90 km) |
| North Chicago to Obersiggenthal | 4,402.83 mi (7,085.67 km) |
| North Chicago to Oberwil | 4,373.49 mi (7,038.45 km) |
| North Chicago to Oberwingert | 4,419.86 mi (7,113.08 km) |
| North Chicago to Oftringen | 4,395.15 mi (7,073.30 km) |
| North Chicago to Olten | 4,393.19 mi (7,070.16 km) |
| North Chicago to Onex | 4,368.69 mi (7,030.73 km) |
| North Chicago to Opfikon | 4,415.46 mi (7,106.00 km) |
| North Chicago to Ostermundigen | 4,392.89 mi (7,069.67 km) |
| North Chicago to Payerne | 4,376.69 mi (7,043.61 km) |
| North Chicago to Pfaffikon | 4,426.39 mi (7,123.59 km) |
| North Chicago to Plan-les-Ouates | 4,370.00 mi (7,032.83 km) |
| North Chicago to Pratteln | 4,378.95 mi (7,047.24 km) |
| North Chicago to Prilly | 4,374.73 mi (7,040.45 km) |
