|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.|
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. Each of the routes to the top climbs 1,340 feet, but the Sunshine/Lion’s Lair route is the most gradual and consistently runnable.