What is Wonderland Lake? A small lake in north Boulder with an easy 1.3-mile loop trail, excellent Flatirons views, and connections to the Foothills Trail system. Free entry, street parking. Popular with dog walkers, families, and joggers. No swimming or fishing—it's a wildlife and scenic area.
Overview
Location: Wonderland Hill Ave, North Boulder
Trail Length: 1.3-mile loop around the lake
Elevation Gain: Minimal (nearly flat)
Entry Fee: Free
Hours: Sunrise to sunset
Wonderland Lake is a neighborhood gem in north Boulder, tucked against the foothills with direct views of the Flatirons. The easy loop trail makes it accessible to everyone—strollers, wheelchairs, elderly visitors, and dogs (on leash). It's where locals go for a quick walk without the drive to Chautauqua.
The Trail
The 1.3-mile loop circles the lake on a well-maintained gravel path. Nearly flat with only gentle undulations. Benches along the way offer rest stops and viewpoints. The trail connects to the Foothills Trail network—you can extend your hike north toward the Foothills Community Park or south toward Sanitas.
Best times: Early morning for fewer crowds and wildlife viewing, sunset for dramatic Flatirons lighting. The trail is popular but not overcrowded except on perfect weekend afternoons.
Wildlife
The lake and surrounding grasslands support diverse wildlife. Watch for:
- Deer (common, especially morning and evening)
- Prairie dogs in the nearby meadows
- Red-tailed hawks hunting overhead
- Various waterfowl on the lake
- Occasional coyotes at dawn/dusk
Keep dogs leashed—wildlife encounters are common and deer can be aggressive during fawning season.
Views
The western views toward the Flatirons are excellent. The third Flatiron is particularly prominent from the trail. Sunrise and sunset light up the rock formations dramatically. Photographers favor the north side of the lake for the best angles.
Facilities & Access
- Street parking on Wonderland Hill Ave (free, limited)
- No restrooms at the lake (nearest at Foothills Community Park)
- Dog waste bags provided at trailhead
- Trail connections to Foothills Trail system
Rules
- Dogs allowed, must be on leash
- No swimming or wading
- No fishing
- No bikes on the lake loop trail (bikes OK on connecting trails)
- Stay on designated trails
Frequently Asked Questions
Can I swim at Wonderland Lake?
No. Swimming is prohibited. It's a wildlife habitat and scenic area, not a recreation lake.
Is the trail stroller-friendly?
Yes. The gravel path is wide and flat enough for strollers and wheelchairs.
Can I extend my hike from Wonderland Lake?
Yes. The trail connects to the Foothills Trail system. You can hike north to Foothills Community Park or south toward the Sanitas area.