| Boulder to Orthez | 4,996.98 mi (8,041.86 km) |
| Boulder to Orvault | 4,802.94 mi (7,729.59 km) |
| Boulder to Osny | 4,859.93 mi (7,821.31 km) |
| Boulder to Ostwald | 5,077.34 mi (8,171.18 km) |
| Boulder to Ouistreham | 4,768.27 mi (7,673.79 km) |
| Boulder to Oullins | 5,107.33 mi (8,219.46 km) |
| Boulder to Outreau | 4,772.61 mi (7,680.77 km) |
| Boulder to Oyonnax | 5,112.81 mi (8,228.28 km) |
| Boulder to Ozoir-la-Ferriere | 4,893.93 mi (7,876.03 km) |
| Boulder to Pace | 4,760.72 mi (7,661.64 km) |
| Boulder to Palaiseau | 4,881.43 mi (7,855.90 km) |
| Boulder to Pamiers | 5,105.62 mi (8,216.70 km) |
| Boulder to Panazol | 4,973.60 mi (8,004.23 km) |
| Boulder to Pantin | 4,878.95 mi (7,851.92 km) |
| Boulder to Paray-le-Monial | 5,048.98 mi (8,125.54 km) |
