If you're sick and tired of jogging, running, cycling, or hitting the elliptical machine, it's time to get out of the gym and get away from the city! There are thousands of hiking trails around the country, and you'll find that these trails make for one heck of an epic cardio workout. You'll have to hike for a few more hours to burn the calories, but what better way to spend your weekend than taking your family or friends for a hike? [caption id="" align="aligncenter" width="758"] Source: blog.codyapp.com[/caption] A bit of cross-country hiking can burn between 350 and 550 calories, but add a backpack into the mix, and you increase the calorie burn to 400 to 650 calories. And that's just PER HOUR! Imagine how many calories you could burn if you go for a morning, afternoon, or even full-day hike! The beauty of hiking is that you can do it out in the middle of nowhere, with no one to disturb you and nothing to distract you. You can breathe clean air, take a relaxing walk in nature, and get away from the hustle and bustle of city life. What an awesome way to get in that workout!