| Port Huron to Norwich | 3,718.73 mi (5,984.71 km) |
| Port Huron to Nottingham | 3,616.70 mi (5,820.51 km) |
| Port Huron to Nuneaton | 3,616.68 mi (5,820.49 km) |
| Port Huron to Oadby | 3,629.54 mi (5,841.18 km) |
| Port Huron to Oakengates | 3,574.15 mi (5,752.04 km) |
| Port Huron to Oakham | 3,640.59 mi (5,858.96 km) |
| Port Huron to Oldbury | 3,596.14 mi (5,787.43 km) |
| Port Huron to Oldham | 3,563.75 mi (5,735.30 km) |
| Port Huron to Ollerton | 3,614.70 mi (5,817.30 km) |
| Port Huron to Olton | 3,606.11 mi (5,803.47 km) |
| Port Huron to Omagh | 3,342.10 mi (5,378.59 km) |
| Port Huron to Ormesby | 3,571.64 mi (5,748.00 km) |
| Port Huron to Ormskirk | 3,534.02 mi (5,687.45 km) |
| Port Huron to Orpington | 3,710.69 mi (5,971.77 km) |
| Port Huron to Ossett | 3,580.31 mi (5,761.95 km) |
