There are few constructed trails here, but in a place this desolate you usually don't need them. Most hiking routes in the park are cross-country, up canyons, or along ridges. Route: The boardwalk is open year round, however the water flows down to the boardwalk only from November through May. The best time to hike in Death Valley is from November through March. Summer temperatures can be dangerous in the park's lower elevations. Even during spring and autumn the heat can be unbearable for most people. Save the low elevation hikes for the cooler winter days. The high peaks are a pleasant escape from the heat in summer, but are usually covered with snow in the winter and spring. If you must climb them during winter season, be sure to be properly equipped with adequate winter clothing, an ice axe and crampons.