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Wonderland Lake Trailhead

Wonderland Lake Trailhead


4201 North Broadway at Wonderland Lake. North of Sumac and south of Utica on the west side of Broadway.

Please check for Trail & Area Closures.

Or view the interactive trail map (includes trail closures) and the interactive wildlife closures map

You are responsible for knowing and complying with all closures and OSMP rules & regulations.

Algae blooms at lakes and ponds advisory 

The City of Boulder reminds residents and open space and parks visitors to exercise caution as sustained high temperatures have increased the risk of potentially harmful algae blooms at city lakes and ponds. In particular, the city advises residents to keep children and pets out of Wonderland Lake in north Boulder, where potentially harmful, blue-green algae blooms have been identified. Whenever community members see algae at area lakes and ponds, they should exercise significant caution to keep their pets out of those areas and avoid contact with water. Learn more about the advisory.

Open Space and Mountain Parks Integrated Site Projects

OSMP is currently developing Integrated Site Projects (ISPs) for several specific OSMP locations, including the Wonderland Lake area. Learn more about the ISPs

Help improve our interactive trail map!

Open Space and Mountain Parks is interested in learning how we can improve your experience when using our interactive web map. Your input on a quick 5-minute questionnaire will inform our work to help the community better connect with OSMP. View the map and survey.


Parking lot at 4201 North Broadway, adjacent to the Foothills Nature Center.


Please keep your car doors locked and your car windows rolled up at all times while leaving your vehicle parked at OSMP trailheads. Also consider leaving important valuables at home or take them with you while visiting open space. To report suspicious activity please call City of Boulder Dispatch 303-441-3333 or Boulder County Dispatch 303-441-4444. For crimes in progress, call 911 immediately.


View Wonderland Lake Area Trail Map pdf

Wonderland Lake Loop Trail (1.5 mile) encircles Wonderland Lake providing an easy walk. Sport chairs can access the dam for fishing from the Poplar Street access.
Foothills Trail (1.2 mile south of Lee Hill Rd and 1.1 mile north of Lee Hill Rd) extends north from the northwest side of Wonderland Lake and provides access to the Old Kiln Trail (0.7 mile) and the Four Mile Creek Trailhead. The trail is sport chair accessible from the Four Mile Creek Trailhead south to the Utica Street access. Foothills Trail continues north of Lee Hill road providing access to the Hogback Ridge Trail (1.8 mile) and the Foothills Trailhead.


The Wonderland Hill hang glider and paraglider launch site, located west of Wonderland Lake and Foothills Trail, has three walk-up launch zones and a fourth launch zone accessed by vehicle drop-off (no parking allowed). The landing area for these launch sites is in the neighboring Foothills Community Park. There are no designated landing sites on OSMP property for this site. Please use designated access trails to get to the launch zones.


This converted farm house is often the site for OSMP slide shows and nature programs. It does not house public exhibits. The Flagstaff Nature Center at the Summit of Flagstaff Mountain has visitor information and a number of interesting interactive exhibits.


An RTD bus passes very close to this trailhead. Learn about Taking the Bus to OSMP.


This area is identified as being popular with people using wheelchairs. See the Accessible Trails Page for details.


No facilities available.


One picnic table is available at the trailhead. Grills and stoves are prohibited.


Bicycles are allowed on Foothills Trail and Wonderland Lake Loop Trail. Bicycles are prohibited on the Old Kiln Trail and the Hogback Ridge Trail. Bicycles may be ridden only on those trails that are posted with the international bicycle symbol. Other bike trails on OSMP.


A gem of north Boulder, Wonderland Lake is a great place to fish with kids. This site can be accessed from all bus lines that run along north Broadway, such as the SKIP, and is located along a bike path.  Use of boats or floatation devices, and wading into the water, are not allowed. Visit the Fishing webpage for more information about fishing opportunities and regulations.


Wonderland Lake Dog Regulations Map

Learn about bringing your dog to OSMP. All dogs must be on a hand-held leash at all times in this area.


Horses are allowed on most trails. On-trail riding is encouraged to protect rare plants and wildlife habitat. Learn more about riding your horse on OSMP.


Fishing is popular here and is allowed from the dam and peninsula only. State fishing regulations apply. Birds of prey are common in this area mule deer and coyote are also frequently sighted as well as waterfowl on the lake. Mountain lions frequent the hogback ridges in this area.


  • The 1990 Old Stage fire burned in this area. Site of Silverlake Ditch, one of the earliest local ditches.  Lee Hill Lime Kiln site.