Adrenaline: that’s what adventure seekers require in a destination, and Los Angeles delivers. Endless hiking trails beg exploration in recreation areas like Runyon Canyon, Fryman Canyon, Sycamore Canyon, and Griffith Park. Stair workouts challenge the fittest in Santa Monica, Studio City, and Downtown Los Angeles. Still craving more? Here are three action-packed itineraries that are sure to get the heart pumping.