| Summit to Oakleaf Plantation (Florida) | 840.48 mi (1,352.63 km) |
| Summit to Oakley (California) | 2,505.00 mi (4,031.40 km) |
| Summit to Oakton (Virginia) | 200.56 mi (322.77 km) |
| Summit to Oakville (Missouri) | 862.69 mi (1,388.37 km) |
| Summit to Oatfield (Oregon) | 2,419.28 mi (3,893.45 km) |
| Summit to Ocala (Florida) | 910.06 mi (1,464.59 km) |
| Summit to Ocean Acres (New Jersey) | 67.33 mi (108.36 km) |
| Summit to Ocean City (New Jersey) | 100.78 mi (162.20 km) |
| Summit to Ocean Pines (Maryland) | 166.34 mi (267.69 km) |
| Summit to Ocean Pointe (Hawaii) | 4,949.68 mi (7,965.73 km) |
| Summit to Ocean Springs (Mississippi) | 1,076.35 mi (1,732.22 km) |
| Summit to Oceanside (California) | 2,401.63 mi (3,865.05 km) |
| Summit to Oceanside (New York) | 38.59 mi (62.10 km) |
| Summit to Ocoee (Florida) | 931.41 mi (1,498.96 km) |
| Summit to Oconomowoc (Wisconsin) | 744.04 mi (1,197.42 km) |
