| Heiloo to Orthez | 678.19 mi (1,091.45 km) |
| Heiloo to Orvault | 463.32 mi (745.64 km) |
| Heiloo to Osny | 270.64 mi (435.55 km) |
| Heiloo to Ostwald | 309.05 mi (497.37 km) |
| Heiloo to Ouistreham | 315.39 mi (507.57 km) |
| Heiloo to Oullins | 475.73 mi (765.61 km) |
| Heiloo to Outreau | 187.27 mi (301.39 km) |
| Heiloo to Oyonnax | 440.34 mi (708.65 km) |
| Heiloo to Ozoir-la-Ferriere | 278.69 mi (448.50 km) |
| Heiloo to Pace | 419.71 mi (675.46 km) |
| Heiloo to Palaiseau | 289.42 mi (465.77 km) |
| Heiloo to Pamiers | 670.72 mi (1,079.42 km) |
| Heiloo to Panazol | 491.65 mi (791.24 km) |
| Heiloo to Pantin | 275.13 mi (442.78 km) |
| Heiloo to Paray-le-Monial | 425.69 mi (685.08 km) |
