Whistler may be best-known for some of the raddest skiing and snowboarding on the planet, but come summer, it’s an adventurer’s playground, with everything from aerial-rope courses to white-water ...

WHISTLER, B.C.—Within two hours of arriving in Whistler, I found myself underwater, pulled into the frigid Cheakamus River, by my hair, by two total strangers I had just met. Later in my stay, I was ...