According to this Calorie Calculator Tool, a 30 min Hiking workout for 155 lbs or 70 kg exerciser can burn 219 calories. Note that each 5 min exercised will entail to additional burning calories.
How many calories are burned Hiking in other time-plans?
Other Walking categories
Hiking is a really good for your overall health. However, other exercises findables in this Walking section can improve flexibility, range of motion, strengthen muscles, build core strength and help you to burn more calories.