High Country Oxygen: Your Colorado High Country oxygen and respiratory service experts in Breckenridge. With 35 years of local care, we provide top-notch equipment and service for active living. Visitors dealing with the effects of altitude sickness from the elevation will find relief with oxygen therapy. Get same-day oxygen delivery (8 am to 5 pm, 7 days a week) and emergency services for post-surgery or ER-prescribed oxygen. Breathe easy with High Country Oxygen.