| Castelsarrasin to Marmande | 56.39 mi (90.76 km) |
| Castelsarrasin to Maromme | 376.01 mi (605.13 km) |
| Castelsarrasin to Marquette-les-Lille | 467.52 mi (752.41 km) |
| Castelsarrasin to Marseille | 219.14 mi (352.68 km) |
| Castelsarrasin to Martigues | 201.57 mi (324.40 km) |
| Castelsarrasin to Massy | 328.82 mi (529.18 km) |
| Castelsarrasin to Maubeuge | 451.43 mi (726.51 km) |
| Castelsarrasin to Mauguio | 147.51 mi (237.39 km) |
| Castelsarrasin to Mauleon | 218.53 mi (351.69 km) |
| Castelsarrasin to Maurepas | 328.75 mi (529.07 km) |
| Castelsarrasin to Maxeville | 402.63 mi (647.97 km) |
| Castelsarrasin to Mayenne | 305.82 mi (492.16 km) |
| Castelsarrasin to Mazamet | 73.67 mi (118.57 km) |
| Castelsarrasin to Meaux | 350.33 mi (563.80 km) |
| Castelsarrasin to Melun | 319.66 mi (514.44 km) |
