| Port Huron to Oswaldtwistle | 3,548.00 mi (5,709.96 km) |
| Port Huron to Oswestry | 3,546.51 mi (5,707.55 km) |
| Port Huron to Otley | 3,570.19 mi (5,745.66 km) |
| Port Huron to Ovenden | 3,567.39 mi (5,741.16 km) |
| Port Huron to Oxford | 3,646.86 mi (5,869.06 km) |
| Port Huron to Oxted | 3,710.15 mi (5,970.91 km) |
| Port Huron to Padbury | 3,652.35 mi (5,877.90 km) |
| Port Huron to Padiham | 3,549.65 mi (5,712.61 km) |
| Port Huron to Paignton | 3,593.77 mi (5,783.61 km) |
| Port Huron to Paisley | 3,419.99 mi (5,503.95 km) |
| Port Huron to Palmers Green | 3,695.33 mi (5,947.06 km) |
| Port Huron to Parkstone | 3,650.08 mi (5,874.24 km) |
| Port Huron to Partick | 3,423.49 mi (5,509.57 km) |
| Port Huron to Patcham | 3,716.41 mi (5,980.98 km) |
| Port Huron to Peebles | 3,469.68 mi (5,583.91 km) |
