I live in Colorado and know the area well. Most of the resorts will prohibit drone operations, the key is to fly outside the resort area and avoid US National Parks (National Forests are OK). If I recall there is a golf course there, that may work if it is closed and you are operating outside the course property. Breckenridge is a bit more strict and has a town ordnance prohibiting operation on town property. You might find some areas off of highway 6 that might work. It does get very windy there at times! Hope this helps!