| Middelharnis to Oakley (California) | 5,431.12 mi (8,740.54 km) |
| Middelharnis to Oakton (Virginia) | 3,843.86 mi (6,186.10 km) |
| Middelharnis to Oakville (Missouri) | 4,369.01 mi (7,031.24 km) |
| Middelharnis to Oatfield (Oregon) | 5,015.65 mi (8,071.90 km) |
| Middelharnis to Ocala (Florida) | 4,513.20 mi (7,263.29 km) |
| Middelharnis to Ocean Acres (New Jersey) | 3,683.80 mi (5,928.50 km) |
| Middelharnis to Ocean City (New Jersey) | 3,718.27 mi (5,983.97 km) |
| Middelharnis to Ocean Pines (Maryland) | 3,780.74 mi (6,084.51 km) |
| Middelharnis to Ocean Pointe (Hawaii) | 7,274.74 mi (11,707.57 km) |
| Middelharnis to Ocean Springs (Mississippi) | 4,718.17 mi (7,593.16 km) |
| Middelharnis to Oceanside (California) | 5,582.81 mi (8,984.66 km) |
| Middelharnis to Oceanside (New York) | 3,618.01 mi (5,822.63 km) |
| Middelharnis to Ocoee (Florida) | 4,518.13 mi (7,271.23 km) |
| Middelharnis to Oconomowoc (Wisconsin) | 4,074.07 mi (6,556.58 km) |
| Middelharnis to Odenton (Maryland) | 3,811.40 mi (6,133.86 km) |
