Soaring Tree Top Adventures in Durango, Colorado offers the largest zip line course in the world. With 27 breathtaking spans, this all-day, family-friendly adventure features 5.5 hours of ziplining, a four-course gourmet lunch in the trees, an ecology tour, and first-class train transportation to Soaring in their own private, luxurious train cars, offering guests two of the best Durango attractions in one day.