Boulder – Double Sanitas 8 Loop

One of the most popular mountains to hike in Boulder is Mt. Sanitas. Strenuous, but short, with about 1,250 ft elevation gain over 1 mile uphill, it’s a great option for those who want some solid exercise in a short period of time, while also taking in some beautiful views of the surrounding mountains and Boulder. If you’re training for a big hike, ascending Mt. Sanitas twice is a way to get in extra elevation gain and mileage. 

Boulder – Green Mountain Loop

Green Mountain is the third highest mountain in Boulder at 8,150 ft, and one of the 5 iconic mountain peaks in Boulder. Whether you just want to see the excellent views, or to get some serious exercise, or to train for a high elevation gain hike, the Green Mountain Loop has it all. Beyond the exercise aspect, I love how this hike showcases different types of scenery along the way.