It depends from where in Iowa you are referring. From Des Moines it is 1621.8 miles, but that can change from different locations. number from Mapquest.
about 200 miles
There are 775.1 miles from Yellowstone National Park to South Lake Tahoe in California.
Lake Tahoe has a surface area of 191 square miles.
2750 miles
858 miles
237 miles
1918 miles
882 miles
2731 miles
739 miles
280 miles
188 miles