Trip
Ascending Hikes - Endurance – Boulder Open Space - Sanitas to Flagstaff
We shall start at the Chautauqua Park trailhead and then hike up Mount Sanitas before ascending Flagstaff Peak.
Contacts
- Tue, Feb 17, 2026
- Ascending Hikes Section
- Hiking
- Adults
- Challenging
- Mileage: 12.1 mi
- Elevation Gain: 3,133 ft
- High Point Elevation: 6,943 ft
- Maximum Wind: 30 kts
- Pace: 1-2 mph
- 3 (6 capacity)
- 1 (2 capacity)
- Cancellation & Refund Policy
This is a training hike for a springtime attempt at the Boulder Skyline Traverse. This hike is also excellent preparation for the summer 14ers climbing season.
6:00am: Colorado Mountain Club 6:15am: form carpools and depart for Chautauqua Park trailhead 6:45am: trailhead briefing and orientation 7:00am: depart for Mount Sanitas and return via Flagstaff Peak. Cf.: Chautauqua Trailhead | COTREX
Required Equipment
10 essentials - you must bring traction control devices (YakTrax, microspikes, crampons) in order to safely traverse the snowpacked and icy trail conditions. I also expect fresh or current snowfall with accompanying winds to accompany us throughout the hike. Bring warm, waterproof, windproof clothing layers to prevent hypothermia.