| Silverton to Olympia (Washington) | 140.97 mi (226.87 km) |
| Silverton to Olympia Heights (Florida) | 2,695.53 mi (4,338.04 km) |
| Silverton to Omaha (Nebraska) | 1,365.71 mi (2,197.90 km) |
| Silverton to On Top of the World Designated Place (Florida) | 2,455.11 mi (3,951.12 km) |
| Silverton to Onalaska (Wisconsin) | 1,549.43 mi (2,493.57 km) |
| Silverton to Oneida (New York) | 2,310.83 mi (3,718.93 km) |
| Silverton to Oneonta (New York) | 2,354.16 mi (3,788.65 km) |
| Silverton to Ontario (California) | 805.71 mi (1,296.66 km) |
| Silverton to Ontario (Oregon) | 293.78 mi (472.80 km) |
| Silverton to Opa-locka (Florida) | 2,691.58 mi (4,331.68 km) |
| Silverton to Opelika (Alabama) | 2,162.40 mi (3,480.05 km) |
| Silverton to Opelousas (Louisiana) | 1,935.11 mi (3,114.26 km) |
| Silverton to Orange (California) | 817.40 mi (1,315.49 km) |
| Silverton to Orange (Texas) | 1,877.06 mi (3,020.83 km) |
| Silverton to Orange City (Florida) | 2,510.03 mi (4,039.51 km) |
