| Ottawa to Mankato (Minnesota) | 325.67 mi (524.11 km) |
| Ottawa to Manor (Texas) | 901.51 mi (1,450.83 km) |
| Ottawa to Manorville (New York) | 834.30 mi (1,342.67 km) |
| Ottawa to Mansfield (Ohio) | 330.59 mi (532.03 km) |
| Ottawa to Mansfield (Texas) | 759.63 mi (1,222.51 km) |
| Ottawa to Manteca (California) | 1,732.78 mi (2,788.63 km) |
| Ottawa to Manville (New Jersey) | 744.25 mi (1,197.75 km) |
| Ottawa to Maple Grove (Minnesota) | 348.78 mi (561.30 km) |
| Ottawa to Maple Heights (Ohio) | 376.47 mi (605.86 km) |
| Ottawa to Maple Valley (Washington) | 1,678.42 mi (2,701.15 km) |
| Ottawa to Mapleton (Utah) | 1,190.56 mi (1,916.03 km) |
| Ottawa to Maplewood (Minnesota) | 327.96 mi (527.81 km) |
| Ottawa to Marana (Arizona) | 1,373.66 mi (2,210.69 km) |
| Ottawa to Marco Island (Florida) | 1,140.65 mi (1,835.70 km) |
| Ottawa to Margate (Florida) | 1,153.65 mi (1,856.62 km) |
