| Harstad to Oakley (California) | 4,754.85 mi (7,652.19 km) |
| Harstad to Oakton (Virginia) | 3,834.48 mi (6,170.99 km) |
| Harstad to Oakville (Missouri) | 4,156.70 mi (6,689.57 km) |
| Harstad to Oatfield (Oregon) | 4,272.42 mi (6,875.79 km) |
| Harstad to Ocala (Florida) | 4,559.87 mi (7,338.40 km) |
| Harstad to Ocean Acres (New Jersey) | 3,709.98 mi (5,970.64 km) |
| Harstad to Ocean City (New Jersey) | 3,747.00 mi (6,030.21 km) |
| Harstad to Ocean Pines (Maryland) | 3,814.73 mi (6,139.21 km) |
| Harstad to Ocean Pointe (Hawaii) | 6,204.43 mi (9,985.07 km) |
| Harstad to Ocean Springs (Mississippi) | 4,634.74 mi (7,458.89 km) |
| Harstad to Oceanside (California) | 5,006.89 mi (8,057.81 km) |
| Harstad to Oceanside (New York) | 3,639.78 mi (5,857.66 km) |
| Harstad to Ocoee (Florida) | 4,583.30 mi (7,376.11 km) |
| Harstad to Oconomowoc (Wisconsin) | 3,824.50 mi (6,154.94 km) |
| Harstad to Odenton (Maryland) | 3,809.13 mi (6,130.21 km) |
