| Lakeside to Olympia Heights (Florida) | 317.03 mi (510.21 km) |
| Lakeside to Omaha (Nebraska) | 1,107.82 mi (1,782.87 km) |
| Lakeside to On Top of the World Designated Place (Florida) | 77.69 mi (125.02 km) |
| Lakeside to Onalaska (Wisconsin) | 1,081.86 mi (1,741.08 km) |
| Lakeside to Oneida (New York) | 955.43 mi (1,537.62 km) |
| Lakeside to Oneonta (New York) | 928.61 mi (1,494.45 km) |
| Lakeside to Ontario (California) | 2,104.51 mi (3,386.88 km) |
| Lakeside to Ontario (Oregon) | 2,143.21 mi (3,449.16 km) |
| Lakeside to Opa-locka (Florida) | 306.85 mi (493.83 km) |
| Lakeside to Opelika (Alabama) | 275.22 mi (442.92 km) |
| Lakeside to Opelousas (Louisiana) | 615.48 mi (990.51 km) |
| Lakeside to Orange (California) | 2,117.67 mi (3,408.06 km) |
| Lakeside to Orange (Texas) | 716.37 mi (1,152.89 km) |
| Lakeside to Orange City (Florida) | 87.83 mi (141.34 km) |
| Lakeside to Orangeburg (South Carolina) | 237.90 mi (382.87 km) |
