| Mersch to Orthez | 541.28 mi (871.10 km) |
| Mersch to Orvault | 392.52 mi (631.69 km) |
| Mersch to Osny | 187.67 mi (302.02 km) |
| Mersch to Ostwald | 110.36 mi (177.60 km) |
| Mersch to Ouistreham | 286.99 mi (461.86 km) |
| Mersch to Oullins | 285.17 mi (458.93 km) |
| Mersch to Outreau | 209.76 mi (337.58 km) |
| Mersch to Oyonnax | 242.28 mi (389.91 km) |
| Mersch to Ozoir-la-Ferriere | 168.17 mi (270.65 km) |
| Mersch to Pace | 373.83 mi (601.63 km) |
| Mersch to Palaiseau | 188.01 mi (302.57 km) |
| Mersch to Pamiers | 505.51 mi (813.54 km) |
| Mersch to Panazol | 349.79 mi (562.93 km) |
| Mersch to Pantin | 176.66 mi (284.30 km) |
| Mersch to Paray-le-Monial | 245.55 mi (395.17 km) |
