| Kirkintilloch to Olympia Heights (Florida) | 4,236.12 mi (6,817.38 km) |
| Kirkintilloch to Omaha (Nebraska) | 3,995.74 mi (6,430.52 km) |
| Kirkintilloch to On Top of the World Designated Place (Florida) | 4,129.06 mi (6,645.08 km) |
| Kirkintilloch to Onalaska (Wisconsin) | 3,695.27 mi (5,946.96 km) |
| Kirkintilloch to Oneida (New York) | 3,173.29 mi (5,106.92 km) |
| Kirkintilloch to Oneonta (New York) | 3,180.04 mi (5,117.77 km) |
| Kirkintilloch to Ontario (California) | 5,098.98 mi (8,206.01 km) |
| Kirkintilloch to Ontario (Oregon) | 4,504.45 mi (7,249.22 km) |
| Kirkintilloch to Opa-locka (Florida) | 4,223.37 mi (6,796.86 km) |
| Kirkintilloch to Opelika (Alabama) | 4,058.00 mi (6,530.72 km) |
| Kirkintilloch to Opelousas (Louisiana) | 4,422.59 mi (7,117.47 km) |
| Kirkintilloch to Orange (California) | 5,119.33 mi (8,238.76 km) |
| Kirkintilloch to Orange (Texas) | 4,506.49 mi (7,252.49 km) |
| Kirkintilloch to Orange City (Florida) | 4,099.90 mi (6,598.16 km) |
| Kirkintilloch to Orangeburg (South Carolina) | 3,843.76 mi (6,185.94 km) |
