| Ontario to Oswaldtwistle | 5,248.28 mi (8,446.30 km) |
| Ontario to Oswestry | 5,265.76 mi (8,474.42 km) |
| Ontario to Otley | 5,263.32 mi (8,470.50 km) |
| Ontario to Ovenden | 5,264.50 mi (8,472.39 km) |
| Ontario to Oxford | 5,373.05 mi (8,647.09 km) |
| Ontario to Oxted | 5,436.11 mi (8,748.57 km) |
| Ontario to Padbury | 5,373.09 mi (8,647.16 km) |
| Ontario to Padiham | 5,248.50 mi (8,446.65 km) |
| Ontario to Paignton | 5,354.59 mi (8,617.38 km) |
| Ontario to Paisley | 5,094.61 mi (8,198.98 km) |
| Ontario to Palmers Green | 5,416.28 mi (8,716.66 km) |
| Ontario to Parkstone | 5,396.90 mi (8,685.47 km) |
| Ontario to Partick | 5,097.01 mi (8,202.85 km) |
| Ontario to Patcham | 5,449.41 mi (8,769.98 km) |
| Ontario to Peebles | 5,140.71 mi (8,273.17 km) |
