| Catonsville to Massarosa | 4,294.56 mi (6,911.42 km) |
| Catonsville to Matelica | 4,431.76 mi (7,132.23 km) |
| Catonsville to Matera | 4,683.00 mi (7,536.57 km) |
| Catonsville to Matino | 4,774.43 mi (7,683.70 km) |
| Catonsville to Mazzarino | 4,703.49 mi (7,569.53 km) |
| Catonsville to Meda | 4,185.23 mi (6,735.48 km) |
| Catonsville to Medesano | 4,256.52 mi (6,850.21 km) |
| Catonsville to Medicina | 4,330.00 mi (6,968.45 km) |
| Catonsville to Meldola | 4,359.85 mi (7,016.50 km) |
| Catonsville to Melegnano | 4,201.84 mi (6,762.21 km) |
| Catonsville to Melendugno | 4,774.05 mi (7,683.09 km) |
| Catonsville to Melfi | 4,628.83 mi (7,449.37 km) |
| Catonsville to Melilli | 4,749.93 mi (7,644.27 km) |
| Catonsville to Melito di Napoli | 4,569.57 mi (7,354.01 km) |
| Catonsville to Melito di Porto Salvo | 4,751.97 mi (7,647.56 km) |
