| Montalto Uffugo to Olympia Heights (Florida) | 5,434.10 mi (8,745.33 km) |
| Montalto Uffugo to Omaha (Nebraska) | 5,424.85 mi (8,730.46 km) |
| Montalto Uffugo to On Top of the World Designated Place (Florida) | 5,382.07 mi (8,661.60 km) |
| Montalto Uffugo to Onalaska (Wisconsin) | 5,120.11 mi (8,240.02 km) |
| Montalto Uffugo to Oneida (New York) | 4,521.41 mi (7,276.51 km) |
| Montalto Uffugo to Oneonta (New York) | 4,518.42 mi (7,271.69 km) |
| Montalto Uffugo to Ontario (California) | 6,565.43 mi (10,566.04 km) |
| Montalto Uffugo to Ontario (Oregon) | 5,975.55 mi (9,616.72 km) |
| Montalto Uffugo to Opa-locka (Florida) | 5,422.47 mi (8,726.63 km) |
| Montalto Uffugo to Opelika (Alabama) | 5,370.50 mi (8,642.99 km) |
| Montalto Uffugo to Opelousas (Louisiana) | 5,765.56 mi (9,278.77 km) |
| Montalto Uffugo to Orange (California) | 6,585.82 mi (10,598.86 km) |
| Montalto Uffugo to Orange (Texas) | 5,857.97 mi (9,427.48 km) |
| Montalto Uffugo to Orange City (Florida) | 5,342.14 mi (8,597.34 km) |
| Montalto Uffugo to Orangeburg (South Carolina) | 5,129.78 mi (8,255.58 km) |
