| Ottawa to Maricopa (Arizona) | 1,393.15 mi (2,242.06 km) |
| Ottawa to Marietta (Georgia) | 562.37 mi (905.05 km) |
| Ottawa to Marietta (Ohio) | 410.48 mi (660.60 km) |
| Ottawa to Marina (California) | 1,787.61 mi (2,876.89 km) |
| Ottawa to Marinette (Wisconsin) | 264.72 mi (426.02 km) |
| Ottawa to Marion (Arkansas) | 431.58 mi (694.56 km) |
| Ottawa to Marion (Illinois) | 250.26 mi (402.76 km) |
| Ottawa to Marion (Indiana) | 174.31 mi (280.53 km) |
| Ottawa to Marion (Iowa) | 150.08 mi (241.53 km) |
| Ottawa to Marion (Ohio) | 302.03 mi (486.07 km) |
| Ottawa to Marion Oaks (Florida) | 931.38 mi (1,498.91 km) |
| Ottawa to Markham (Illinois) | 61.17 mi (98.44 km) |
| Ottawa to Marlborough (Massachusetts) | 890.39 mi (1,432.94 km) |
| Ottawa to Marlton (New Jersey) | 734.80 mi (1,182.54 km) |
| Ottawa to Marquette (Michigan) | 365.35 mi (587.97 km) |
