| Castlebar to Marly-le-Roi | 599.39 mi (964.62 km) |
| Castlebar to Marmande | 773.78 mi (1,245.28 km) |
| Castlebar to Maromme | 535.71 mi (862.15 km) |
| Castlebar to Marquette-les-Lille | 566.29 mi (911.35 km) |
| Castlebar to Marseille | 987.34 mi (1,588.97 km) |
| Castlebar to Martigues | 971.56 mi (1,563.58 km) |
| Castlebar to Massy | 611.59 mi (984.26 km) |
| Castlebar to Maubeuge | 614.46 mi (988.87 km) |
| Castlebar to Mauguio | 928.92 mi (1,494.96 km) |
| Castlebar to Mauleon | 608.70 mi (979.61 km) |
| Castlebar to Maurepas | 598.80 mi (963.68 km) |
| Castlebar to Maxeville | 754.76 mi (1,214.67 km) |
| Castlebar to Mayenne | 537.38 mi (864.84 km) |
| Castlebar to Mazamet | 890.24 mi (1,432.70 km) |
| Castlebar to Meaux | 623.62 mi (1,003.62 km) |
