The following are the top five hiking trails in Boulder, Colorado, as assessed by recent Trip Advisor reviews:

1 – Flatirons

The Flatirons are a group of rock formations in the western United States, near Boulder, Colorado, that are made up of flatirons and other irregular shapes. A group of five huge, numbered Flatirons may be found on the east slope of Green Mountain, running north to south from north to south. The phrase “The Flatirons” is sometimes used to refer to just these five Flatirons.

The First and Second Flatirons Loop is a 2.7-mile widely traveled loop route situated near Boulder, Colorado. It is categorized as moderate and features magnificent wildflowers. The trail is best used from April through October for hiking, running, rock climbing, and snowshoeing. This trail is also dog-friendly.

2 – Royal Arch

The Royal Arch Trail is a 3.1-mile out-and-back trail near Boulder, Colorado that features beautiful wildflowers and is rated as difficult.  The trail is best used from March to October and is primarily used for hiking, running, and snowshoeing. This trail is also accessible to dogs.

3 – Mount Sanitas Trail 

This 3.20-mile loop trail is located near Boulder, Colorado. It is generally regarded as a difficult route, and it takes an average of 2 hours and 8 minutes to complete. This is a popular hiking area, so you’ll almost certainly run into other people while exploring. Dogs are permitted but must be kept on a leash.

4 – Mesa Trail 

The Mesa Trail, which is relatively flat but still challenging, spans a beautiful area of the amazing landscape just below the flatirons and foothill peaks – the views never stop. If you choose to hike the entire trail, it will be a longer hike, but there are a few different trailhead options along the way that make it very customizable.

5 – Sugar Loaf Mountain –

Sugarloaf Mountain Route is a 1.3-mile out-and-back trail located in Boulder, Colorado. The trail is moderately frequented and features magnificent wildflowers. The trail is ideal for a variety of activities and is best used from March to November. Dogs are permitted to use this trail as well, but must be leashed.