Las Vegas is in Pacific Time not Mountain Time. Also Other hub cities like San Francisco, Salt Lake City, Phoenix, Minneapolis, Detroit, Washington-Dulles, Philadelphia, and Houston (United-Continental) are left out in the dark. Smaller hub cities like Portland, Orlando, Tampa, Cleveland, Cincinnati, San Diego, Honolulu, Washington-National, Indianapolis, Oklahoma City, Milwaukee, New Orleans, and Anchorage are also possible places to start the race as for airport wise. But I really like to see the Starting Line in San Juan, Puerto Rico with the first leg somewhere in the Caribbean like the Lesser Antilles island nations.
Ah, you're right. Las Vegas is indeed in PST/PDT. Thanks for the correction.
Some of those hub cities were actually end cities, such as SFO, PHX, PDX, HNL
So what makes for an ideal starting location then? There has to be some other factors, such how well the production staff has worked with the local authorities and tourism offices. After all, every place TAR visits gets showcased nicely, usually with intriguing aerial views involved.