New to the area or just looking for a variety in your running routes? Try this gorgeous 3.7 mile loop around the Eagle/Sage Trail. Close to downtown Boulder, this trail boasts beautiful mountain views, pastures and a lake. The route is somewhat hilly which gives the runner more of a challenge on this short loop.
To access the trail, head out of Boulder towards Longmont on Hwy 119. Take a left onto Jay Road. Take an immediate right onto 51st Street. 51st street turns into a dirt road. Continue on the dirt road that will bend right and then left on a slight uphill. Eagle Trail head is located on the left side of the road immediately following the uphill left bend. There is parking in a dirt lot. There are no bathroom facilities here.
The trail begins with a flat .5 miles out. Turn right at the intersection of two trails. You are now on the Sage Trail. Head west and go through a cattle fence (easily opened and shutting behind you with springs). Anytime you reach an intersection veer left to stay within the loop. After a short descent and another fence, you will find yourself at the Boulder Valley Ranch parking lot which has a bathroom available. Continue through the parking lot and a third cattle fence on the single track trail. The trail descends near a lake, giving you beautiful views of the Boulder Reservoir. You then have a short, steep climb to the intersection where you began the loop. Take the .5 mile flat trail back to the parking lot.
To lengthen this basic loop for a 6-mile run, start at the Eagle trail parking lot and follow the directions described above until you reach the Boulder Valley Ranch parking lot. Here you will make a right turn onto the more technical and narrower Cobalt Trail. Once over the hill, you will cross the dirt road and turn left onto the Mesa Reservoir Trail. You will dip down into a valley and come upon a trail crossing. Turn left here, run past the wetlands surrounding the Mesa Reservoir and follow this up to the Eagle Trail and make a right. Follow the Eagle Trail down a short, steep hill where you will intersect with the Sage Trail. Continue straight along the Eagle Trail and follow the above directions back to the start.
Be aware that although it rarely feels crowded, this trail is also used by mountain bikers and horse back riders. During the spring thaw the trail can be muddy. Dogs on leashes are permitted.
For more information visit http://www.bouldercolorado.gov and click on the Open Space and Mountain Parks button.