What is the distance from Boise ID to Greely CO?

781 miles taking this route:

1. Take I-84 EAST from Boise to I-80 EAST to CHEYENNE at END I-84 in Utah past Ogden.
2. Take I-80 EAST to U.S. 65 to GREELEY, COLO. at EXIT 362 in Cheyenne, Wyoming.
3. Turn right off the exit ramp onto U.S. 65 SOUTH to GREELEY, COLO, then take U.S. 65 SOUTH to Greeley.