| Dorchester to Orthez | 505.43 mi (813.41 km) |
| Dorchester to Orvault | 240.78 mi (387.50 km) |
| Dorchester to Osny | 230.62 mi (371.14 km) |
| Dorchester to Ostwald | 477.75 mi (768.86 km) |
| Dorchester to Ouistreham | 138.58 mi (223.03 km) |
| Dorchester to Oullins | 479.80 mi (772.16 km) |
| Dorchester to Outreau | 176.33 mi (283.78 km) |
| Dorchester to Oyonnax | 481.46 mi (774.84 km) |
| Dorchester to Ozoir-la-Ferriere | 264.68 mi (425.97 km) |
| Dorchester to Pace | 179.88 mi (289.50 km) |
| Dorchester to Palaiseau | 250.67 mi (403.41 km) |
| Dorchester to Pamiers | 558.49 mi (898.80 km) |
| Dorchester to Panazol | 378.31 mi (608.82 km) |
| Dorchester to Pantin | 249.61 mi (401.70 km) |
| Dorchester to Paray-le-Monial | 419.94 mi (675.83 km) |
