Best route from Milwaukee to Las Vegas by auto?

The best route from Milwaukee to Las Vegas by auto is:

1. Milwaukee, WI to Denver, CO (1,100 miles):

- Take I-90 W to I-94 W.

- Follow I-94 W to I-29 S.

- Continue on I-29 S to I-80 W.

- Take I-80 W to Denver, CO.

2. Denver, CO to Las Vegas, NV (700 miles):

- Take I-70 W from Denver, CO to Green River, UT.

- Take US-191 S from Green River, UT to Moab, UT.

- Continue on US-191 S to Bluff, UT.

- Take UT-163 W from Bluff, UT to Mexican Hat, UT.

- Take UT-261 S from Mexican Hat, UT to Kayenta, AZ.

- Take US-160 W from Kayenta, AZ to Tuba City, AZ.

- Take US-89 N from Tuba City, AZ to Las Vegas, NV.