| River Grove to Mancha Real | 4,287.92 mi (6,900.74 km) |
| River Grove to Manilva | 4,265.22 mi (6,864.20 km) |
| River Grove to Manises | 4,366.09 mi (7,026.54 km) |
| River Grove to Manlleu | 4,388.72 mi (7,062.96 km) |
| River Grove to Manresa | 4,379.76 mi (7,048.55 km) |
| River Grove to Manzanares | 4,253.45 mi (6,845.27 km) |
| River Grove to Manzanares el Real | 4,167.94 mi (6,707.66 km) |
| River Grove to Maracena | 4,309.15 mi (6,934.91 km) |
| River Grove to Marbella | 4,277.24 mi (6,883.56 km) |
| River Grove to Marchena | 4,221.87 mi (6,794.44 km) |
| River Grove to Marin | 3,893.85 mi (6,266.54 km) |
| River Grove to Marratxi | 4,500.90 mi (7,243.49 km) |
| River Grove to Martorell | 4,393.79 mi (7,071.12 km) |
| River Grove to Martos | 4,274.32 mi (6,878.85 km) |
| River Grove to Masamagrell | 4,368.08 mi (7,029.75 km) |
