| Keystone to Miranda de Ebro | 4,432.71 mi (7,133.76 km) |
| Keystone to Mislata | 4,622.43 mi (7,439.09 km) |
| Keystone to Moana | 4,151.56 mi (6,681.29 km) |
| Keystone to Moguer | 4,334.35 mi (6,975.47 km) |
| Keystone to Molina de Segura | 4,612.46 mi (7,423.04 km) |
| Keystone to Molins de Rey | 4,701.16 mi (7,565.78 km) |
| Keystone to Mollerusa | 4,641.45 mi (7,469.69 km) |
| Keystone to Mollet | 4,707.99 mi (7,576.78 km) |
| Keystone to Moncada | 4,707.97 mi (7,576.74 km) |
| Keystone to Moncada | 4,621.92 mi (7,438.26 km) |
| Keystone to Monforte de Lemos | 4,209.52 mi (6,774.57 km) |
| Keystone to Monforte del Cid | 4,630.24 mi (7,451.64 km) |
| Keystone to Mongat | 4,712.88 mi (7,584.64 km) |
| Keystone to Monovar | 4,623.44 mi (7,440.70 km) |
| Keystone to Monserrat | 4,615.46 mi (7,427.87 km) |
