Gross Reservoir

From Boulder, the pullout that is best to park at for the Avalon crag is 8.4 miles up the canyon. You will walk down the side of the road past the talus field, where if the river is too high to wade you can use the tyrolean traverse. Otherwise, you can wade or hop across rocks according to the day's water height. There are many obvious trails to get you to the rock once you cross the river. Be ...

Heading west from Boulder, take CO 119/Boulder Canyon Drive into Boulder Canyon. Once you're in the canyon, there are many areas that all have great climbing. For the more traditional climber, there are areas such as Castle Rock (39.9787, -105.4551) and the Happy Hour Crag (40.0033, -105.3939). People looking for great sport climbs should check out the Sport Park area (39.9726, -105.4648) or Lo...

While the narrow trail is often popular, it's only 100 yards to see this 70-ft tall waterfall, set against a beautiful canyon backdrop. Keep in mind there's no climbing allowed on or around the falls. It is also a good idea to check if the trail is closed for maintenance, ahead of time.

When it comes to hiking trails in Boulder, the standard response usually consists of either Chautauqua Park or Mt. Sanitas, and while both offer excellent hiking options, they are both usually jam packed on the weekends. If you’re looking to stay close to the city, but want a little more seclusion, then check out Boulder County Open Space and hit up Walker Ranch. Although Walker Ranch is still ...

Starting at 7,600 ft this 1.35 mile (one-way) hike is the shortest, and by far the least strenuous, hike to summit one of Boulder's iconic peaks. Parking for this trail-head is available along the road a short drive, 4.5 miles, up Flagstaff Rd. The trail gently slopes along a ridge for the first mile - this stretch has plenty of great views looking north and west. The majority of the elevatio...

The Betasso Preserve features two loop trails that are accessible to both hikers and mountain bikers.  Drive up (west) Boulder Canyon about 15 minutes outside of Boulder and turn right (north)  on Sugarloaf Dr.  After another 5 or so minutes you'll see a sign on the right-hand (northeast) side of the road that takes you to the Betasso parking lot.  The Canyon Loop Trail is a moderate 3.3 mile t...