| Callaway to Odessa (Texas) | 1,000.45 mi (1,610.06 km) |
| Callaway to Ogden (Utah) | 1,659.41 mi (2,670.57 km) |
| Callaway to Oildale (California) | 1,968.88 mi (3,168.61 km) |
| Callaway to Ojus (Florida) | 437.64 mi (704.31 km) |
| Callaway to Okemos (Michigan) | 870.86 mi (1,401.51 km) |
| Callaway to Oklahoma City (Oklahoma) | 785.28 mi (1,263.79 km) |
| Callaway to Okmulgee (Oklahoma) | 714.20 mi (1,149.39 km) |
| Callaway to Olathe (Kansas) | 801.26 mi (1,289.50 km) |
| Callaway to Old Jamestown (Missouri) | 658.68 mi (1,060.04 km) |
| Callaway to Oldsmar (Florida) | 226.08 mi (363.85 km) |
| Callaway to Olean (New York) | 915.42 mi (1,473.22 km) |
| Callaway to Olive Branch (Mississippi) | 416.57 mi (670.40 km) |
| Callaway to Olivehurst (California) | 2,122.94 mi (3,416.54 km) |
| Callaway to Olney (Maryland) | 786.79 mi (1,266.21 km) |
| Callaway to Olympia (Washington) | 2,299.45 mi (3,700.61 km) |
