| Middle Island to Oakley (California) | 2,575.29 mi (4,144.52 km) |
| Middle Island to Oakton (Virginia) | 268.98 mi (432.87 km) |
| Middle Island to Oakville (Missouri) | 937.67 mi (1,509.03 km) |
| Middle Island to Oatfield (Oregon) | 2,482.17 mi (3,994.66 km) |
| Middle Island to Ocala (Florida) | 960.77 mi (1,546.21 km) |
| Middle Island to Ocean Acres (New Jersey) | 105.74 mi (170.17 km) |
| Middle Island to Ocean City (New Jersey) | 141.99 mi (228.51 km) |
| Middle Island to Ocean Pines (Maryland) | 208.78 mi (336.00 km) |
| Middle Island to Ocean Pointe (Hawaii) | 5,019.32 mi (8,077.81 km) |
| Middle Island to Ocean Springs (Mississippi) | 1,143.58 mi (1,840.41 km) |
| Middle Island to Oceanside (California) | 2,475.43 mi (3,983.82 km) |
| Middle Island to Oceanside (New York) | 40.16 mi (64.64 km) |
| Middle Island to Ocoee (Florida) | 978.96 mi (1,575.48 km) |
| Middle Island to Oconomowoc (Wisconsin) | 811.77 mi (1,306.41 km) |
| Middle Island to Odenton (Maryland) | 234.90 mi (378.04 km) |
