| River Grove to Johnstown (Pennsylvania) | 476.88 mi (767.47 km) |
| River Grove to Joliet (Illinois) | 32.31 mi (52.00 km) |
| River Grove to Jonesboro (Arkansas) | 448.45 mi (721.71 km) |
| River Grove to Joplin (Missouri) | 488.02 mi (785.40 km) |
| River Grove to Joppatowne (Maryland) | 625.79 mi (1,007.11 km) |
| River Grove to Juana Díaz (Puerto Rico) | 2,073.11 mi (3,336.35 km) |
| River Grove to Junction City (Kansas) | 513.90 mi (827.05 km) |
| River Grove to Juneau (Alaska) | 2,283.74 mi (3,675.32 km) |
| River Grove to Jupiter (Florida) | 1,125.09 mi (1,810.65 km) |
| River Grove to Jupiter Farms (Florida) | 1,122.63 mi (1,806.69 km) |
| River Grove to Jurupa Valley (California) | 1,694.50 mi (2,727.04 km) |
| River Grove to Justice (Illinois) | 12.08 mi (19.44 km) |
| River Grove to Kahului (Hawaii) | 4,184.55 mi (6,734.38 km) |
| River Grove to Kailua (Hawaii) | 4,228.47 mi (6,805.06 km) |
| River Grove to Kalamazoo (Michigan) | 117.85 mi (189.65 km) |
