| Boulder to Nyon | 5,127.39 mi (8,251.74 km) |
| Boulder to Oberriet | 5,198.26 mi (8,365.79 km) |
| Boulder to Obersiggenthal | 5,147.00 mi (8,283.30 km) |
| Boulder to Oberwil | 5,120.58 mi (8,240.77 km) |
| Boulder to Oberwingert | 5,161.75 mi (8,307.04 km) |
| Boulder to Oftringen | 5,142.23 mi (8,275.63 km) |
| Boulder to Olten | 5,140.09 mi (8,272.18 km) |
| Boulder to Onex | 5,131.96 mi (8,259.09 km) |
| Boulder to Opfikon | 5,158.88 mi (8,302.41 km) |
| Boulder to Ostermundigen | 5,144.56 mi (8,279.37 km) |
| Boulder to Payerne | 5,131.75 mi (8,258.75 km) |
| Boulder to Pfaffikon | 5,169.39 mi (8,319.33 km) |
| Boulder to Plan-les-Ouates | 5,133.32 mi (8,261.28 km) |
| Boulder to Pratteln | 5,125.40 mi (8,248.54 km) |
| Boulder to Prilly | 5,133.32 mi (8,261.28 km) |
