The overall distance is 527 miles
The estimate time it will take is 7 hours and 50 minutes
It is 556 miles according to Google Maps.
Denver, Colorado is 245 miles away from Vernal, Utah. Therefore, if you were to drive from Denver to Vernal, you would drive east on US-40 for 121 miles until you cross into Colorado. This would be the approximate mid point between the two points.
MapQuest estimates the driving time as 7 hours and 44 minutes.
Utah
You would be flying over California, Nevada, Utah, and Colorado.
denver
If you drove 400 miles west of Denver you would be in Utah.
Do you mean Grand Junction Colorado? It's 4-5 hours, depending on traffic and weather.
Utah
It is 537.37 miles according to MapQuest.
probably
Salt Lake City, the capital city of Utah, is approximately 400 miles west of Denver.