Oh, Mark, depending on how much lead ya have in your foot and whereabouts you're coming from, it's between 4-6 hours. And, I certainly understand not wanting to spend all of your time in a car. There are so many great things to do there, even just Boulder for a day can be fun and you can find some really nice spots for a picnic right up Boulder Canyon.

Good wishes for you on it working out for Honolulu and for a good visit in Colorado.

kat