| Oak Hills to Olympia Heights (Florida) | 2,708.18 mi (4,358.39 km) |
| Oak Hills to Omaha (Nebraska) | 1,370.05 mi (2,204.88 km) |
| Oak Hills to On Top of the World Designated Place (Florida) | 2,466.24 mi (3,969.03 km) |
| Oak Hills to Onalaska (Wisconsin) | 1,547.30 mi (2,490.14 km) |
| Oak Hills to Oneida (New York) | 2,305.08 mi (3,709.67 km) |
| Oak Hills to Oneonta (New York) | 2,348.90 mi (3,780.18 km) |
| Oak Hills to Ontario (California) | 841.37 mi (1,354.05 km) |
| Oak Hills to Ontario (Oregon) | 305.99 mi (492.45 km) |
| Oak Hills to Opa-locka (Florida) | 2,704.05 mi (4,351.75 km) |
| Oak Hills to Opelika (Alabama) | 2,172.08 mi (3,495.63 km) |
| Oak Hills to Opelousas (Louisiana) | 1,951.14 mi (3,140.06 km) |
| Oak Hills to Orange (California) | 853.28 mi (1,373.21 km) |
| Oak Hills to Orange (Texas) | 1,894.66 mi (3,049.15 km) |
| Oak Hills to Orange City (Florida) | 2,520.73 mi (4,056.73 km) |
| Oak Hills to Orangeburg (South Carolina) | 2,355.66 mi (3,791.08 km) |
