California and Utah are about 120 miles apart at closest point. Colorado is much further.
If you are driving or flying to Colorado or Utah from California, Colorado is farther away.
California to Colorado, obviously!
Colorado lies east of Utah. Utah lies to the north-east of California. Therefore, Colorado is farther from California. See the link for a map.
California to Colorado is further than California to Utah.
California, Nevada, Arizona, Utah, Wyoming, Colorado, and New Mexico.
Colorado is in the West (western US), north of New Mexico and south of Wyoming and western Nebraska.It is the NE corner of the "four corner states" (Utah, Colorado, Arizona and New Mexico) so it is farther east than Utah and other states such as Nevada and California.
Utah, Nevada, California, Colorado and New Mexico
You would be flying over California, Nevada, Utah, and Colorado.
Colorado
Colorado
Colorado is "further away" from California than Utah is in the sense that, given a pair of points in Colorado and California, there is at least one point in Utah which is closer to the point in California than the point in Colorado is.
Yes, the Colorado River runs through parts of Utah, Colorado, Arizona, Nevada, and California.