| Gubbio to Olympia Heights (Florida) | 5,157.71 mi (8,300.54 km) |
| Gubbio to Omaha (Nebraska) | 5,102.35 mi (8,211.43 km) |
| Gubbio to On Top of the World Designated Place (Florida) | 5,094.29 mi (8,198.47 km) |
| Gubbio to Onalaska (Wisconsin) | 4,798.18 mi (7,721.92 km) |
| Gubbio to Oneida (New York) | 4,212.70 mi (6,779.69 km) |
| Gubbio to Oneonta (New York) | 4,211.48 mi (6,777.72 km) |
| Gubbio to Ontario (California) | 6,236.10 mi (10,036.03 km) |
| Gubbio to Ontario (Oregon) | 5,645.57 mi (9,085.66 km) |
| Gubbio to Opa-locka (Florida) | 5,145.81 mi (8,281.38 km) |
| Gubbio to Opelika (Alabama) | 5,070.76 mi (8,160.60 km) |
| Gubbio to Opelousas (Louisiana) | 5,460.60 mi (8,787.99 km) |
| Gubbio to Orange (California) | 6,256.49 mi (10,068.84 km) |
| Gubbio to Orange (Texas) | 5,551.45 mi (8,934.20 km) |
| Gubbio to Orange City (Florida) | 5,056.39 mi (8,137.47 km) |
| Gubbio to Orangeburg (South Carolina) | 4,834.57 mi (7,780.50 km) |
