| Lake Monticello to Odessa (Texas) | 1,418.79 mi (2,283.33 km) |
| Lake Monticello to Ogden (Utah) | 1,794.69 mi (2,888.28 km) |
| Lake Monticello to Oildale (California) | 2,244.15 mi (3,611.62 km) |
| Lake Monticello to Ojus (Florida) | 833.57 mi (1,341.50 km) |
| Lake Monticello to Okemos (Michigan) | 460.22 mi (740.65 km) |
| Lake Monticello to Oklahoma City (Oklahoma) | 1,074.28 mi (1,728.89 km) |
| Lake Monticello to Okmulgee (Oklahoma) | 989.77 mi (1,592.88 km) |
| Lake Monticello to Olathe (Kansas) | 894.15 mi (1,439.00 km) |
| Lake Monticello to Old Jamestown (Missouri) | 650.16 mi (1,046.33 km) |
| Lake Monticello to Oldsmar (Florida) | 726.64 mi (1,169.41 km) |
| Lake Monticello to Olean (New York) | 287.54 mi (462.75 km) |
| Lake Monticello to Olive Branch (Mississippi) | 671.51 mi (1,080.69 km) |
| Lake Monticello to Olivehurst (California) | 2,316.49 mi (3,728.03 km) |
| Lake Monticello to Olney (Maryland) | 108.59 mi (174.76 km) |
| Lake Monticello to Olympia (Washington) | 2,322.63 mi (3,737.90 km) |
