The least-visited of Hawaii’s major islands, Kauai is the Aloha State’s best-kept secret. Only 1.1 million of Hawaii’s 8.2 million visitors annually venture to Kauai. But runners in the know head to the Garden Isle for technical mountain trails between lushly green volcanic peaks, flat recreation paths with ocean views and one of America’s most scenic—and challenging—marathons. The island is best explored on foot (in fact, 90 percent of Kauai is inaccessible by vehicle!), so lace up your shoes and get ready to sweat.
And don’t overlook Kauai’s 50 miles of soft, white-sand beaches—more per mile than any other Hawaiian island—perfect for a barefoot workout or cool-down splash in the Pacific. Throw in a treasure trove of other outdoor activities like hiking, surfing, swimming, sailing, paddling, riding and zip lining, and you’ve got an adventure vacation of epic proportions. With average temps that drift between 70 and 80 degrees, it’s always a great day to head outdoors. Simply, Kauai is a runner’s paradise.