A statewide smoking ban went into effect this year for all public and private buildings, with very few exceptions (like your own home). However, a Summit County-wide ban went into effect a couple of years earlier - the limitations were somewhat different, but close. One thing the State of Colorado did was to require that smokers do so outside, and at least 15 feet away from entrances. That one provision, however, was left to local communities to modify if they so chose.
So, Silverthorne, at a recent Council meeting, did just that. The consensus was that 15 feet away from many businesses would put people in alleys or on roadways, and that was not acceptable. So, now you are free to smoke in Silverthorne right outside the entrance. Smoke 'em!