| Horb am Neckar to Orthez | 568.34 mi (914.66 km) |
| Horb am Neckar to Orvault | 484.57 mi (779.84 km) |
| Horb am Neckar to Osny | 304.82 mi (490.57 km) |
| Horb am Neckar to Ostwald | 45.35 mi (72.98 km) |
| Horb am Neckar to Ouistreham | 410.60 mi (660.80 km) |
| Horb am Neckar to Oullins | 262.54 mi (422.52 km) |
| Horb am Neckar to Outreau | 354.01 mi (569.73 km) |
| Horb am Neckar to Oyonnax | 207.50 mi (333.94 km) |
| Horb am Neckar to Ozoir-la-Ferriere | 275.49 mi (443.35 km) |
| Horb am Neckar to Pace | 481.10 mi (774.25 km) |
| Horb am Neckar to Palaiseau | 295.12 mi (474.95 km) |
| Horb am Neckar to Pamiers | 501.53 mi (807.14 km) |
| Horb am Neckar to Panazol | 390.61 mi (628.62 km) |
| Horb am Neckar to Pantin | 288.58 mi (464.42 km) |
| Horb am Neckar to Paray-le-Monial | 254.13 mi (408.98 km) |
