| Shasta Lake to Olympia (Washington) | 440.37 mi (708.71 km) |
| Shasta Lake to Olympia Heights (Florida) | 2,610.58 mi (4,201.32 km) |
| Shasta Lake to Omaha (Nebraska) | 1,368.64 mi (2,202.61 km) |
| Shasta Lake to On Top of the World Designated Place (Florida) | 2,384.80 mi (3,837.96 km) |
| Shasta Lake to Onalaska (Wisconsin) | 1,599.01 mi (2,573.35 km) |
| Shasta Lake to Oneida (New York) | 2,377.76 mi (3,826.64 km) |
| Shasta Lake to Oneonta (New York) | 2,416.82 mi (3,889.50 km) |
| Shasta Lake to Ontario (California) | 528.10 mi (849.89 km) |
| Shasta Lake to Ontario (Oregon) | 359.78 mi (579.01 km) |
| Shasta Lake to Opa-locka (Florida) | 2,608.13 mi (4,197.37 km) |
| Shasta Lake to Opelika (Alabama) | 2,107.12 mi (3,391.08 km) |
| Shasta Lake to Opelousas (Louisiana) | 1,829.30 mi (2,943.98 km) |
| Shasta Lake to Orange (California) | 536.87 mi (864.01 km) |
| Shasta Lake to Orange (Texas) | 1,758.57 mi (2,830.14 km) |
| Shasta Lake to Orange City (Florida) | 2,442.77 mi (3,931.27 km) |
