| River Grove to Petaluma (California) | 1,843.76 mi (2,967.25 km) |
| River Grove to Petersburg (Virginia) | 644.28 mi (1,036.86 km) |
| River Grove to Pflugerville (Texas) | 960.20 mi (1,545.29 km) |
| River Grove to Pharr (Texas) | 1,237.25 mi (1,991.16 km) |
| River Grove to Phelan (California) | 1,683.42 mi (2,709.20 km) |
| River Grove to Phenix City (Alabama) | 671.98 mi (1,081.45 km) |
| River Grove to Philadelphia (Pennsylvania) | 675.22 mi (1,086.67 km) |
| River Grove to Phillipsburg (New Jersey) | 661.76 mi (1,065.00 km) |
| River Grove to Phoenix (Arizona) | 1,438.67 mi (2,315.32 km) |
| River Grove to Phoenixville (Pennsylvania) | 653.20 mi (1,051.22 km) |
| River Grove to Picayune (Mississippi) | 793.67 mi (1,277.29 km) |
| River Grove to Pickerington (Ohio) | 299.71 mi (482.34 km) |
| River Grove to Pico Rivera (California) | 1,726.26 mi (2,778.14 km) |
| River Grove to Piedmont (California) | 1,833.05 mi (2,950.01 km) |
| River Grove to Pierre (South Dakota) | 650.88 mi (1,047.49 km) |
