The Rocky Mountains are the birthplace of the Arkansas River, the most popular river in the United States. It is also perfect for white water rafting, whether you want to go for a half day, or turn it into a multi-day trip extravaganza. There are many different rafting routes depending on your level of expertise, from family-friendly to expert Class IV.
Still haven’t packed enough into your Colorado vacation? Make time to see some of the great Colorado mountain attractions — tour a ghost town near Aspen, sail above the mountains in a balloon over Breckenridge, rock out at a music festival in Telluride, check out the nightlife scene in Vail and try your luck at a casino in Black Hawk, Central City or Cripple Creek.