| Ithaca to Oakley (California) | 2,375.72 mi (3,823.35 km) |
| Ithaca to Oakton (Virginia) | 249.20 mi (401.04 km) |
| Ithaca to Oakville (Missouri) | 776.07 mi (1,248.96 km) |
| Ithaca to Oatfield (Oregon) | 2,271.19 mi (3,655.12 km) |
| Ithaca to Ocala (Florida) | 969.09 mi (1,559.60 km) |
| Ithaca to Ocean Acres (New Jersey) | 219.59 mi (353.39 km) |
| Ithaca to Ocean City (New Jersey) | 240.87 mi (387.65 km) |
| Ithaca to Ocean Pines (Maryland) | 289.35 mi (465.67 km) |
| Ithaca to Ocean Pointe (Hawaii) | 4,817.16 mi (7,752.46 km) |
| Ithaca to Ocean Springs (Mississippi) | 1,073.64 mi (1,727.86 km) |
| Ithaca to Oceanside (California) | 2,291.92 mi (3,688.48 km) |
| Ithaca to Oceanside (New York) | 194.00 mi (312.22 km) |
| Ithaca to Ocoee (Florida) | 998.34 mi (1,606.68 km) |
| Ithaca to Oconomowoc (Wisconsin) | 609.36 mi (980.67 km) |
| Ithaca to Odenton (Maryland) | 233.62 mi (375.97 km) |
