| Piqua to Maricopa (Arizona) | 1,608.53 mi (2,588.67 km) |
| Piqua to Marietta (Georgia) | 428.51 mi (689.61 km) |
| Piqua to Marietta (Ohio) | 156.78 mi (252.31 km) |
| Piqua to Marina (California) | 2,031.45 mi (3,269.30 km) |
| Piqua to Marinette (Wisconsin) | 382.05 mi (614.86 km) |
| Piqua to Marion (Arkansas) | 472.13 mi (759.82 km) |
| Piqua to Marion (Illinois) | 302.59 mi (486.98 km) |
| Piqua to Marion (Indiana) | 79.51 mi (127.96 km) |
| Piqua to Marion (Iowa) | 403.86 mi (649.94 km) |
| Piqua to Marion (Ohio) | 66.61 mi (107.20 km) |
| Piqua to Marion Oaks (Florida) | 779.06 mi (1,253.77 km) |
| Piqua to Markham (Illinois) | 206.00 mi (331.53 km) |
| Piqua to Marlborough (Massachusetts) | 676.15 mi (1,088.16 km) |
| Piqua to Marlton (New Jersey) | 492.90 mi (793.25 km) |
| Piqua to Marquette (Michigan) | 469.37 mi (755.38 km) |
