| Spanish Springs to Olympia (Washington) | 535.25 mi (861.41 km) |
| Spanish Springs to Olympia Heights (Florida) | 2,457.12 mi (3,954.35 km) |
| Spanish Springs to Omaha (Nebraska) | 1,242.63 mi (1,999.82 km) |
| Spanish Springs to On Top of the World Designated Place (Florida) | 2,234.21 mi (3,595.61 km) |
| Spanish Springs to Onalaska (Wisconsin) | 1,487.73 mi (2,394.26 km) |
| Spanish Springs to Oneida (New York) | 2,267.91 mi (3,649.85 km) |
| Spanish Springs to Oneonta (New York) | 2,305.09 mi (3,709.69 km) |
| Spanish Springs to Ontario (California) | 404.51 mi (651.00 km) |
| Spanish Springs to Ontario (Oregon) | 332.14 mi (534.53 km) |
| Spanish Springs to Opa-locka (Florida) | 2,454.90 mi (3,950.79 km) |
| Spanish Springs to Opelika (Alabama) | 1,960.24 mi (3,154.70 km) |
| Spanish Springs to Opelousas (Louisiana) | 1,673.95 mi (2,693.96 km) |
| Spanish Springs to Orange (California) | 417.11 mi (671.28 km) |
| Spanish Springs to Orange (Texas) | 1,601.74 mi (2,577.75 km) |
| Spanish Springs to Orange City (Florida) | 2,292.66 mi (3,689.68 km) |
