| Millbrook to Odessa (Texas) | 933.98 mi (1,503.09 km) |
| Millbrook to Ogden (Utah) | 1,530.55 mi (2,463.19 km) |
| Millbrook to Oildale (California) | 1,873.75 mi (3,015.51 km) |
| Millbrook to Ojus (Florida) | 587.03 mi (944.73 km) |
| Millbrook to Okemos (Michigan) | 713.02 mi (1,147.49 km) |
| Millbrook to Oklahoma City (Oklahoma) | 669.83 mi (1,077.98 km) |
| Millbrook to Okmulgee (Oklahoma) | 591.48 mi (951.90 km) |
| Millbrook to Olathe (Kansas) | 646.73 mi (1,040.81 km) |
| Millbrook to Old Jamestown (Missouri) | 489.64 mi (788.00 km) |
| Millbrook to Oldsmar (Florida) | 378.70 mi (609.46 km) |
| Millbrook to Olean (New York) | 792.01 mi (1,274.62 km) |
| Millbrook to Olive Branch (Mississippi) | 262.03 mi (421.70 km) |
| Millbrook to Olivehurst (California) | 2,010.23 mi (3,235.15 km) |
| Millbrook to Olney (Maryland) | 693.76 mi (1,116.50 km) |
| Millbrook to Olympia (Washington) | 2,157.61 mi (3,472.33 km) |
