| Karlovo to Orvault | 1,324.22 mi (2,131.13 km) |
| Karlovo to Osny | 1,175.26 mi (1,891.40 km) |
| Karlovo to Ostwald | 918.92 mi (1,478.86 km) |
| Karlovo to Ouistreham | 1,280.91 mi (2,061.42 km) |
| Karlovo to Oullins | 1,010.59 mi (1,626.38 km) |
| Karlovo to Outreau | 1,226.27 mi (1,973.49 km) |
| Karlovo to Oyonnax | 974.35 mi (1,568.07 km) |
| Karlovo to Ozoir-la-Ferriere | 1,143.47 mi (1,840.23 km) |
| Karlovo to Pace | 1,336.94 mi (2,151.59 km) |
| Karlovo to Palaiseau | 1,161.75 mi (1,869.66 km) |
| Karlovo to Pamiers | 1,171.14 mi (1,884.77 km) |
| Karlovo to Panazol | 1,179.36 mi (1,897.99 km) |
| Karlovo to Pantin | 1,157.68 mi (1,863.11 km) |
| Karlovo to Paray-le-Monial | 1,048.74 mi (1,687.79 km) |
| Karlovo to Parempuyre | 1,272.02 mi (2,047.12 km) |
