| Willoughby to Norton (Ohio) | 44.34 mi (71.37 km) |
| Willoughby to Norton Shores (Michigan) | 268.35 mi (431.86 km) |
| Willoughby to Norwalk (California) | 2,056.15 mi (3,309.06 km) |
| Willoughby to Norwalk (Connecticut) | 415.54 mi (668.75 km) |
| Willoughby to Norwalk (Iowa) | 634.50 mi (1,021.13 km) |
| Willoughby to Norwalk (Ohio) | 68.08 mi (109.57 km) |
| Willoughby to Norwich (Connecticut) | 481.38 mi (774.71 km) |
| Willoughby to Norwood (Ohio) | 234.83 mi (377.92 km) |
| Willoughby to Novato (California) | 2,175.13 mi (3,500.54 km) |
| Willoughby to Novi (Michigan) | 121.25 mi (195.14 km) |
| Willoughby to O'Fallon (Illinois) | 496.03 mi (798.29 km) |
| Willoughby to O'Fallon (Missouri) | 529.09 mi (851.48 km) |
| Willoughby to Oak Creek (Wisconsin) | 342.67 mi (551.47 km) |
| Willoughby to Oak Forest (Illinois) | 327.60 mi (527.23 km) |
| Willoughby to Oak Grove (Oregon) | 2,058.66 mi (3,313.09 km) |
