Make an early start. Hike as much as possible of each day’s distance in the cool hours of morning (or evening), because summer afternoons are typically hotter in many mid-latitude mountain ranges and desert canyons, and heat amplifies your fatigue. Not everyone likes to wake up early, and your trip doesn’t have to feel like work; just find a balance between how much sleep you need and minimizing your exposure to afternoon heat. Get organized in camp with gear to facilitate a quicker morning departure – eating breakfast and packing up doesn’t have to take two hours.
Source: The Big Outside