With long stretches of flat water interrupted by forgiving Class II riffles, this cocoa-colored stretch of the Colorado is an ideal place to start learning to paddle. It doesn't hurt that it's also near the Glenwood Whitewater Park, which draws SUPers from around the country who try their luck on its powerful standing wave; The high-profile park has even hosted the Whitewater Stand-Up Paddling Championship. Alpine Quest Sports teaches full day lessons for $259.
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