| Northbrook to Nyon | 4,373.49 mi (7,038.45 km) |
| Northbrook to Oberriet | 4,466.02 mi (7,187.37 km) |
| Northbrook to Obersiggenthal | 4,410.51 mi (7,098.03 km) |
| Northbrook to Oberwil | 4,381.11 mi (7,050.72 km) |
| Northbrook to Oberwingert | 4,427.58 mi (7,125.50 km) |
| Northbrook to Oftringen | 4,402.76 mi (7,085.56 km) |
| Northbrook to Olten | 4,400.81 mi (7,082.43 km) |
| Northbrook to Onex | 4,375.97 mi (7,042.44 km) |
| Northbrook to Opfikon | 4,423.15 mi (7,118.37 km) |
| Northbrook to Ostermundigen | 4,400.41 mi (7,081.78 km) |
| Northbrook to Payerne | 4,384.15 mi (7,055.60 km) |
| Northbrook to Pfaffikon | 4,434.09 mi (7,135.98 km) |
| Northbrook to Plan-les-Ouates | 4,377.27 mi (7,044.54 km) |
| Northbrook to Pratteln | 4,386.59 mi (7,059.53 km) |
| Northbrook to Prilly | 4,382.11 mi (7,052.33 km) |
