| Johnstown to Isabela (Puerto Rico) | 1,665.67 mi (2,680.63 km) |
| Johnstown to Iselin (New Jersey) | 242.54 mi (390.33 km) |
| Johnstown to Isla Vista (California) | 2,264.40 mi (3,644.20 km) |
| Johnstown to Issaquah (Washington) | 2,173.40 mi (3,497.75 km) |
| Johnstown to Ithaca (New York) | 192.62 mi (309.99 km) |
| Johnstown to Ives Estates (Florida) | 995.03 mi (1,601.35 km) |
| Johnstown to Jackson (Michigan) | 313.97 mi (505.28 km) |
| Johnstown to Jackson (Mississippi) | 836.31 mi (1,345.91 km) |
| Johnstown to Jackson (Missouri) | 611.85 mi (984.68 km) |
| Johnstown to Jackson (Tennessee) | 628.52 mi (1,011.51 km) |
| Johnstown to Jackson (Wyoming) | 1,642.43 mi (2,643.23 km) |
| Johnstown to Jacksonville (Alabama) | 586.76 mi (944.30 km) |
| Johnstown to Jacksonville (Arkansas) | 813.98 mi (1,309.97 km) |
| Johnstown to Jacksonville (Florida) | 707.65 mi (1,138.85 km) |
| Johnstown to Jacksonville (Illinois) | 599.51 mi (964.82 km) |
