| Catonsville to Orthez | 3,809.06 mi (6,130.08 km) |
| Catonsville to Orvault | 3,671.82 mi (5,909.22 km) |
| Catonsville to Osny | 3,785.57 mi (6,092.28 km) |
| Catonsville to Ostwald | 4,035.43 mi (6,494.40 km) |
| Catonsville to Ouistreham | 3,682.19 mi (5,925.92 km) |
| Catonsville to Oullins | 3,995.30 mi (6,429.82 km) |
| Catonsville to Outreau | 3,725.46 mi (5,995.56 km) |
| Catonsville to Oyonnax | 4,016.12 mi (6,463.32 km) |
| Catonsville to Ozoir-la-Ferriere | 3,818.83 mi (6,145.81 km) |
| Catonsville to Pace | 3,644.13 mi (5,864.66 km) |
| Catonsville to Palaiseau | 3,802.14 mi (6,118.95 km) |
| Catonsville to Pamiers | 3,928.71 mi (6,322.65 km) |
| Catonsville to Panazol | 3,838.08 mi (6,176.80 km) |
| Catonsville to Pantin | 3,804.02 mi (6,121.98 km) |
| Catonsville to Paray-le-Monial | 3,943.99 mi (6,347.25 km) |
