| Ottawa to Norton (Ohio) | 373.88 mi (601.70 km) |
| Ottawa to Norton Shores (Michigan) | 181.39 mi (291.92 km) |
| Ottawa to Norwalk (California) | 1,672.32 mi (2,691.33 km) |
| Ottawa to Norwalk (Connecticut) | 799.53 mi (1,286.72 km) |
| Ottawa to Norwalk (Iowa) | 252.20 mi (405.88 km) |
| Ottawa to Norwalk (Ohio) | 322.75 mi (519.41 km) |
| Ottawa to Norwich (Connecticut) | 865.53 mi (1,392.94 km) |
| Ottawa to Norwood (Ohio) | 275.91 mi (444.04 km) |
| Ottawa to Novato (California) | 1,795.25 mi (2,889.18 km) |
| Ottawa to Novi (Michigan) | 285.09 mi (458.80 km) |
| Ottawa to O'Fallon (Illinois) | 199.09 mi (320.40 km) |
| Ottawa to O'Fallon (Missouri) | 203.81 mi (328.00 km) |
| Ottawa to Oak Creek (Wisconsin) | 115.53 mi (185.93 km) |
| Ottawa to Oak Forest (Illinois) | 58.18 mi (93.64 km) |
| Ottawa to Oak Grove (Oregon) | 1,707.73 mi (2,748.32 km) |
