| Sligo to Oakley (California) | 4,936.10 mi (7,943.89 km) |
| Sligo to Oakton (Virginia) | 3,291.15 mi (5,296.60 km) |
| Sligo to Oakville (Missouri) | 3,818.87 mi (6,145.88 km) |
| Sligo to Oatfield (Oregon) | 4,543.26 mi (7,311.67 km) |
| Sligo to Ocala (Florida) | 3,964.25 mi (6,379.84 km) |
| Sligo to Ocean Acres (New Jersey) | 3,131.65 mi (5,039.91 km) |
| Sligo to Ocean City (New Jersey) | 3,166.28 mi (5,095.63 km) |
| Sligo to Ocean Pines (Maryland) | 3,229.07 mi (5,196.68 km) |
| Sligo to Ocean Pointe (Hawaii) | 6,910.52 mi (11,121.41 km) |
| Sligo to Ocean Springs (Mississippi) | 4,165.18 mi (6,703.21 km) |
| Sligo to Oceanside (California) | 5,065.49 mi (8,152.11 km) |
| Sligo to Oceanside (New York) | 3,065.62 mi (4,933.63 km) |
| Sligo to Ocoee (Florida) | 3,970.34 mi (6,389.64 km) |
| Sligo to Oconomowoc (Wisconsin) | 3,527.41 mi (5,676.82 km) |
| Sligo to Odenton (Maryland) | 3,258.78 mi (5,244.50 km) |
