The flat, scenic loop around Wonderland Lake is a great place for easy runs or a launching off point for longer, traffic-free trail runs.

Wonderlake Lake/Foothills Trail

February 15, 2019 Comments Off on Mt. Sanitas Trail/Lion’s Lair Loop Boulder Running Routes, Great Places to Run in Boulder County

Mt. Sanitas Trail/Lion’s Lair Loop

Central Boulder

Difficulty:Moderate/Difficult
Dogs:Yes, but not on the Lion’s Lair trail
Bathrooms:Yes, at Centennial Trailhead
Getting There:The Centennial Trailhead is located on Mapleton Avenue about 1/3 of a mile west of 4th Street. If the trailhead parking lot is full, park along Mapleton or 4th Street instead. A secondary trailhead that accesses the Lion's Lair trail is located about 1.5 miles to the west of the Centennial Trailhead.

The routes up 6,863-foot Mt. Sanitas are among Boulder’s most popular trails, and rightly so. Each is a scenic and strenuous run that winds up at the top of our favorite local mountains.There are three main options from base of the mountain on Mapleton Avenue: the steep, rocky 1.3-mile route up the Mt. Sanitas Ridge to the top of the mountain; the 1-mile smooth dirt road route up Sanitas Valley Trail and the 1-mile rocky single-track route up Dakota Ridge Trail that connect with the steep, rocky 0.6-mile East Ridge Trail that heads to the summit. The other trail option out of the Centennial Trailhead is the 3.8-mile route to the Mt. Sanitas summit by combining Sunshine Canyon Trail with Lion’s Lair Trail on the west side of the peak. Each of the routes to the top climb 1,340 feet, but the Sunshine/Lion’s Lair route is the most gradual and consistently runnable. (Photo: Leo Lesperance)

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