| River Grove to Poinciana (Florida) | 1,018.44 mi (1,639.02 km) |
| River Grove to Point Pleasant (New Jersey) | 728.33 mi (1,172.14 km) |
| River Grove to Pomona (California) | 1,707.50 mi (2,747.96 km) |
| River Grove to Pompano Beach (Florida) | 1,168.52 mi (1,880.56 km) |
| River Grove to Pompton Lakes (New Jersey) | 703.83 mi (1,132.70 km) |
| River Grove to Pompton Plains (New Jersey) | 703.12 mi (1,131.56 km) |
| River Grove to Ponca City (Oklahoma) | 609.74 mi (981.27 km) |
| River Grove to Ponce (Puerto Rico) | 2,071.32 mi (3,333.47 km) |
| River Grove to Pontiac (Illinois) | 82.73 mi (133.14 km) |
| River Grove to Pontiac (Michigan) | 237.88 mi (382.82 km) |
| River Grove to Pooler (Georgia) | 768.93 mi (1,237.47 km) |
| River Grove to Poplar Bluff (Missouri) | 382.18 mi (615.06 km) |
| River Grove to Poquoson (Virginia) | 694.87 mi (1,118.28 km) |
| River Grove to Port Angeles (Washington) | 1,774.26 mi (2,855.40 km) |
| River Grove to Port Arthur (Texas) | 900.20 mi (1,448.73 km) |
