| Boerne to Olympia Heights (Florida) | 1,157.50 mi (1,862.81 km) |
| Boerne to Omaha (Nebraska) | 807.09 mi (1,298.88 km) |
| Boerne to On Top of the World Designated Place (Florida) | 989.60 mi (1,592.60 km) |
| Boerne to Onalaska (Wisconsin) | 1,058.37 mi (1,703.28 km) |
| Boerne to Oneida (New York) | 1,568.56 mi (2,524.35 km) |
| Boerne to Oneonta (New York) | 1,575.86 mi (2,536.10 km) |
| Boerne to Ontario (California) | 1,143.62 mi (1,840.49 km) |
| Boerne to Ontario (Oregon) | 1,402.58 mi (2,257.24 km) |
| Boerne to Opa-locka (Florida) | 1,158.72 mi (1,864.78 km) |
| Boerne to Opelika (Alabama) | 812.94 mi (1,308.30 km) |
| Boerne to Opelousas (Louisiana) | 400.37 mi (644.33 km) |
| Boerne to Orange (California) | 1,153.21 mi (1,855.91 km) |
| Boerne to Orange (Texas) | 298.33 mi (480.11 km) |
| Boerne to Orange City (Florida) | 1,050.92 mi (1,691.30 km) |
| Boerne to Orangeburg (South Carolina) | 1,079.98 mi (1,738.06 km) |
