| Harper Woods to Nyon | 4,163.95 mi (6,701.23 km) |
| Harper Woods to Oberriet | 4,262.25 mi (6,859.42 km) |
| Harper Woods to Obersiggenthal | 4,205.75 mi (6,768.50 km) |
| Harper Woods to Oberwil | 4,175.63 mi (6,720.03 km) |
| Harper Woods to Oberwingert | 4,223.41 mi (6,796.92 km) |
| Harper Woods to Oftringen | 4,197.20 mi (6,754.73 km) |
| Harper Woods to Olten | 4,195.31 mi (6,751.70 km) |
| Harper Woods to Onex | 4,165.83 mi (6,704.26 km) |
| Harper Woods to Opfikon | 4,218.56 mi (6,789.12 km) |
| Harper Woods to Ostermundigen | 4,193.53 mi (6,748.83 km) |
| Harper Woods to Payerne | 4,176.35 mi (6,721.19 km) |
| Harper Woods to Pfaffikon | 4,229.58 mi (6,806.84 km) |
| Harper Woods to Plan-les-Ouates | 4,167.11 mi (6,706.32 km) |
| Harper Woods to Pratteln | 4,181.27 mi (6,729.10 km) |
| Harper Woods to Prilly | 4,173.30 mi (6,716.28 km) |
