| Middle River to Point Pleasant (New Jersey) | 135.05 mi (217.34 km) |
| Middle River to Pomona (California) | 2,298.64 mi (3,699.30 km) |
| Middle River to Pompano Beach (Florida) | 930.17 mi (1,496.97 km) |
| Middle River to Pompton Lakes (New Jersey) | 160.90 mi (258.95 km) |
| Middle River to Pompton Plains (New Jersey) | 158.43 mi (254.96 km) |
| Middle River to Ponca City (Oklahoma) | 1,135.31 mi (1,827.11 km) |
| Middle River to Ponce (Puerto Rico) | 1,586.62 mi (2,553.41 km) |
| Middle River to Pontiac (Illinois) | 653.66 mi (1,051.97 km) |
| Middle River to Pontiac (Michigan) | 424.33 mi (682.89 km) |
| Middle River to Pooler (Georgia) | 568.66 mi (915.17 km) |
| Middle River to Poplar Bluff (Missouri) | 780.78 mi (1,256.54 km) |
| Middle River to Poquoson (Virginia) | 152.87 mi (246.01 km) |
| Middle River to Port Angeles (Washington) | 2,385.25 mi (3,838.69 km) |
| Middle River to Port Arthur (Texas) | 1,188.48 mi (1,912.68 km) |
| Middle River to Port Charlotte (Florida) | 914.11 mi (1,471.12 km) |
