| Halstenbek to Odessa (Texas) | 5,278.56 mi (8,495.02 km) |
| Halstenbek to Ogden (Utah) | 5,030.17 mi (8,095.28 km) |
| Halstenbek to Oildale (California) | 5,567.80 mi (8,960.51 km) |
| Halstenbek to Ojus (Florida) | 4,792.45 mi (7,712.70 km) |
| Halstenbek to Okemos (Michigan) | 4,082.02 mi (6,569.38 km) |
| Halstenbek to Oklahoma City (Oklahoma) | 4,915.47 mi (7,910.68 km) |
| Halstenbek to Okmulgee (Oklahoma) | 4,856.43 mi (7,815.66 km) |
| Halstenbek to Olathe (Kansas) | 4,638.05 mi (7,464.21 km) |
| Halstenbek to Old Jamestown (Missouri) | 4,485.77 mi (7,219.15 km) |
| Halstenbek to Oldsmar (Florida) | 4,778.43 mi (7,690.14 km) |
| Halstenbek to Olean (New York) | 3,898.93 mi (6,274.72 km) |
| Halstenbek to Olive Branch (Mississippi) | 4,676.69 mi (7,526.40 km) |
| Halstenbek to Olivehurst (California) | 5,408.08 mi (8,703.46 km) |
| Halstenbek to Olney (Maryland) | 3,992.31 mi (6,425.00 km) |
| Halstenbek to Olympia (Washington) | 4,949.31 mi (7,965.14 km) |
