| Piqua to Madison (Mississippi) | 623.12 mi (1,002.81 km) |
| Piqua to Madison (New Jersey) | 518.09 mi (833.79 km) |
| Piqua to Madison (Wisconsin) | 334.20 mi (537.85 km) |
| Piqua to Madison Heights (Michigan) | 173.25 mi (278.82 km) |
| Piqua to Madison Heights (Virginia) | 333.68 mi (537.01 km) |
| Piqua to Madisonville (Kentucky) | 261.75 mi (421.25 km) |
| Piqua to Magalia (California) | 1,963.31 mi (3,159.64 km) |
| Piqua to Magna (Utah) | 1,462.01 mi (2,352.88 km) |
| Piqua to Magnolia (Arkansas) | 687.05 mi (1,105.70 km) |
| Piqua to Maili (Hawaii) | 4,448.07 mi (7,158.48 km) |
| Piqua to Maitland (Florida) | 812.57 mi (1,307.70 km) |
| Piqua to Makakilo (Hawaii) | 4,445.59 mi (7,154.49 km) |
| Piqua to Malden (Massachusetts) | 701.68 mi (1,129.24 km) |
| Piqua to Malibu (California) | 1,937.00 mi (3,117.29 km) |
| Piqua to Maltby (Washington) | 1,933.93 mi (3,112.36 km) |
