| Horndean to Orthez | 513.16 mi (825.85 km) |
| Horndean to Orvault | 253.22 mi (407.52 km) |
| Horndean to Osny | 186.73 mi (300.51 km) |
| Horndean to Ostwald | 421.50 mi (678.33 km) |
| Horndean to Ouistreham | 117.56 mi (189.20 km) |
| Horndean to Oullins | 447.08 mi (719.51 km) |
| Horndean to Outreau | 114.00 mi (183.47 km) |
| Horndean to Oyonnax | 442.36 mi (711.91 km) |
| Horndean to Ozoir-la-Ferriere | 220.40 mi (354.70 km) |
| Horndean to Pace | 194.25 mi (312.62 km) |
| Horndean to Palaiseau | 209.67 mi (337.42 km) |
| Horndean to Pamiers | 552.46 mi (889.10 km) |
| Horndean to Panazol | 366.20 mi (589.35 km) |
| Horndean to Pantin | 205.59 mi (330.87 km) |
| Horndean to Paray-le-Monial | 386.48 mi (621.98 km) |
