The chance to ride, run, or walk across one of the 5 dams that defines the 22 miles stretch of river running through Giant Springs State Park only happens a couple times a year! There are multiple ways to enjoy this event. You can access Cochrane Dam from the Rainbow Trailhead at the end of Rainbow Dam Road and take a leisurely 2.5-mile hike or bike ride along the gravel road portion of the River’s Edge Trail to the dam. Once there, relax on the dam and take in the views. If you are a little more adventurous, take the single-track dirt trail from Rainbow Trailhead; medium difficulty and approximately 4 miles.


For a full day adventure, park your vehicle on the South Shore trailhead at Lewis and Clark Overlook and take one of the many trails along the South Shore to Cochrane Dam (3.5 miles), cross it, and then head to Rainbow Trailhead on the North Shore. Remember to set up a shuttle.


Please remember to bring appropriate clothing, shoes, and plenty of water.    


  • Occurred Saturday, September 14th, 2019 @ 10:00 am – 3:00 pm


Giant Springs State Park

4803 Giant Springs Road
Great Falls, MT 59405