| Grantsville to Odessa (Texas) | 825.30 mi (1,328.19 km) |
| Grantsville to Ogden (Utah) | 50.02 mi (80.50 km) |
| Grantsville to Oildale (California) | 505.26 mi (813.13 km) |
| Grantsville to Ojus (Florida) | 2,106.57 mi (3,390.19 km) |
| Grantsville to Okemos (Michigan) | 1,449.13 mi (2,332.15 km) |
| Grantsville to Oklahoma City (Oklahoma) | 887.03 mi (1,427.54 km) |
| Grantsville to Okmulgee (Oklahoma) | 957.89 mi (1,541.58 km) |
| Grantsville to Olathe (Kansas) | 944.00 mi (1,519.22 km) |
| Grantsville to Old Jamestown (Missouri) | 1,182.52 mi (1,903.09 km) |
| Grantsville to Oldsmar (Florida) | 1,896.57 mi (3,052.23 km) |
| Grantsville to Olean (New York) | 1,757.13 mi (2,827.82 km) |
| Grantsville to Olive Branch (Mississippi) | 1,291.75 mi (2,078.86 km) |
| Grantsville to Olivehurst (California) | 492.91 mi (793.25 km) |
| Grantsville to Olney (Maryland) | 1,867.33 mi (3,005.18 km) |
| Grantsville to Olympia (Washington) | 682.23 mi (1,097.94 km) |
