| Canals to Petersburg (Virginia) | 4,046.30 mi (6,511.90 km) |
| Canals to Pflugerville (Texas) | 5,272.01 mi (8,484.48 km) |
| Canals to Pharr (Texas) | 5,482.02 mi (8,822.45 km) |
| Canals to Phelan (California) | 5,960.61 mi (9,592.67 km) |
| Canals to Phenix City (Alabama) | 4,584.85 mi (7,378.60 km) |
| Canals to Philadelphia (Pennsylvania) | 3,851.41 mi (6,198.24 km) |
| Canals to Phillipsburg (New Jersey) | 3,834.00 mi (6,170.23 km) |
| Canals to Phoenix (Arizona) | 5,781.15 mi (9,303.86 km) |
| Canals to Phoenixville (Pennsylvania) | 3,866.17 mi (6,222.01 km) |
| Canals to Picayune (Mississippi) | 4,886.60 mi (7,864.22 km) |
| Canals to Pickerington (Ohio) | 4,216.57 mi (6,785.91 km) |
| Canals to Pico Rivera (California) | 6,005.34 mi (9,664.66 km) |
| Canals to Piedmont (California) | 5,967.50 mi (9,603.77 km) |
| Canals to Pierre (South Dakota) | 4,820.76 mi (7,758.27 km) |
| Canals to Pike Creek Valley (Delaware) | 3,886.70 mi (6,255.04 km) |
