How far is Colorado from HTX?

Excuse me, I'm a bit confused about the distance between Colorado and HTX. Could you please clarify for me? I understand that Colorado is a state in the United States, but I'm not sure what HTX stands for. Is it a city, a region, or perhaps a code for a specific location? Could you provide me with the approximate distance between these two places, assuming that HTX is indeed a valid destination? Additionally, would the distance vary significantly depending on the exact location within Colorado that one is departing from? Thank you for your assistance.