| Mercerville to Johnstown (Pennsylvania) | 222.91 mi (358.74 km) |
| Mercerville to Joliet (Illinois) | 707.92 mi (1,139.28 km) |
| Mercerville to Jonesboro (Arkansas) | 920.44 mi (1,481.31 km) |
| Mercerville to Joplin (Missouri) | 1,088.51 mi (1,751.78 km) |
| Mercerville to Joppatowne (Maryland) | 104.65 mi (168.41 km) |
| Mercerville to Juana Díaz (Puerto Rico) | 1,608.47 mi (2,588.59 km) |
| Mercerville to Junction City (Kansas) | 1,179.03 mi (1,897.46 km) |
| Mercerville to Juneau (Alaska) | 2,841.35 mi (4,572.71 km) |
| Mercerville to Jupiter (Florida) | 970.99 mi (1,562.66 km) |
| Mercerville to Jupiter Farms (Florida) | 972.80 mi (1,565.58 km) |
| Mercerville to Jurupa Valley (California) | 2,372.50 mi (3,818.17 km) |
| Mercerville to Justice (Illinois) | 692.64 mi (1,114.69 km) |
| Mercerville to Kahului (Hawaii) | 4,877.60 mi (7,849.73 km) |
| Mercerville to Kailua (Hawaii) | 4,922.07 mi (7,921.30 km) |
| Mercerville to Kalamazoo (Michigan) | 582.81 mi (937.94 km) |
