| Markham to Johnstown (Pennsylvania) | 465.79 mi (749.62 km) |
| Markham to Joliet (Illinois) | 24.41 mi (39.28 km) |
| Markham to Jonesboro (Arkansas) | 430.49 mi (692.80 km) |
| Markham to Joplin (Missouri) | 479.52 mi (771.71 km) |
| Markham to Joppatowne (Maryland) | 613.92 mi (988.01 km) |
| Markham to Juana Díaz (Puerto Rico) | 2,051.68 mi (3,301.86 km) |
| Markham to Junction City (Kansas) | 513.97 mi (827.16 km) |
| Markham to Juneau (Alaska) | 2,305.18 mi (3,709.82 km) |
| Markham to Jupiter (Florida) | 1,101.58 mi (1,772.83 km) |
| Markham to Jupiter Farms (Florida) | 1,099.11 mi (1,768.84 km) |
| Markham to Jurupa Valley (California) | 1,698.65 mi (2,733.71 km) |
| Markham to Justice (Illinois) | 12.73 mi (20.48 km) |
| Markham to Kahului (Hawaii) | 4,193.16 mi (6,748.24 km) |
| Markham to Kailua (Hawaii) | 4,237.58 mi (6,819.73 km) |
| Markham to Kalamazoo (Michigan) | 117.68 mi (189.38 km) |
