Great blue heron
Ardea herodias
Year-round resident of the lake's shallow margins; nests in the cottonwoods along the inlet creek.
Photo: USFWS — public domain
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Boulder · Easy
Wonderland Lake
Boulder's easiest lake loop — wetlands, prairie, and Foothills views
Boulder Open Space & Mountain Parks
Distance1.8mi round trip
Elevation88ft gain
High point5,588ft summit
Typical time0.5–1hours
Trip Builder
We'll build your kit for Wonderland Lake.
Tell us your date and conditions — we'll factor in the 1.8-mi route, 88 ft of gain, and 0.5–1 hour day to assemble the gear that matters in under a minute.
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Today
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Boulder's easiest lake loop — wetlands, prairie, and Foothills views. Editorial intro forthcoming.
Trip facts
Typical duration0.5–1hours
Trailhead5,500ft elevation
High point5,588ft summit
Dogs: leashes required.
How you'll find it
Wonderland Lake Trailhead at 4201 North Broadway, Boulder — west side of Broadway between Sumac and Utica Avenues. 19 standard + 2 ADA parking spaces; SKIP bus route stops adjacent.
Drive time
Personalize with your ZIP
We'll calculate drive time + a leave-by recommendation to beat the lot fill.
What you'll get
- 1.8-mile family-friendly lake loop — paved and soft-surface trail
- Wetlands, prairie, shrub, and lake habitat in one short walk
- Year-round access — low elevation, first Boulder trail to dry in spring
- Excellent birding and wildlife viewing — waterfowl on the lake, hawks above
What locals know
Practical-craft notes for this specific trail — timing, route, photo, etiquette.
Trail tips
- Photo
Sunrise reflections — Boulder's quietest spot
Calm mornings (before the wind picks up) the lake mirrors the Foothills perfectly. Get there before 7am for stillness. The east shore framing puts the Foothills at the optimal angle.
- Etiquette
Wildlife refuge — stay on trail, no swimming
Wonderland is a designated waterfowl habitat. Swimming, wading, and off-trail walking are prohibited (OSMP fines up to $150). Dogs leashed at all times — even VST tags don't exempt.
- Timing
Year-round, no traction needed in light snow
The 88ft of gain is so minimal that snow rarely makes this trail impassable. Even with 6 inches on the ground, the wide path stays trafficable. Microspikes only after a major storm.
- Route
Counterclockwise gives the best sequence
Start the loop heading north — you save the western Foothills view for the second half, which is more dramatic. Most people go clockwise; reverse it for the better photographer's experience.
- Water
Bring water — none on trail
No spigot at the trailhead, no creeks crossing the path. The 1.8mi feels short but a hot July afternoon will catch you without water. 16oz is enough.
Where you'll start
Wonderland Lake's small lot (19 standard + 2 ADA spaces) is north-Boulder's most popular short-walk trailhead — fills by 9am on summer weekends but rarely full in shoulder seasons. Free parking, no overnight stays. SKIP bus stops one block away for a car-free option.
Parking cost
Free
Overnight
Not allowed
Boulder OSMP closes lots at sunset; no overnight parking permitted.
Park entrance
Free
Restrooms
Vault toilets
Fills by
8am–9am summer; rarely full off-season
Cell service
Reliable
What's at the trailhead
- Restrooms — Vault toilets
- No potable water — bring your own from town
- Information kiosk
- Reliable cell service
If the lot is full
Limited street parking on Broadway is metered and short-duration; the SKIP bus stops one block east — viable car-free option.
Alternative access
- RTD SKIP bus (Broadway corridor)
When to go
Highlighted months offer the best conditions.
Who shares the trail
Wonderland is one of Boulder's premier birding spots — the lake supports wetland species (great blue heron, mallards, kingfishers) and the surrounding shortgrass prairie hosts red-tailed hawks year-round. Mule deer browse the perimeter at dawn.
- Common
CommonMallard duck
Anas platyrhynchos
Year-roundPhoto: USFWS — public domain
CommonBelted kingfisher
Megaceryle alcyon
Heard rattling along the lake edge — perches on dead snags above the water.
Photo: USFWS — public domain
CommonRed-tailed hawk
Buteo jamaicensis
Year-roundPhoto: USFWS — public domain
What to watch for
What to watch for
- Limited shade — sun protection and water essential on summer afternoons
- Dogs must be leashed and on-trail to protect wildlife habitat
- Muddy and slick after rain or snow — waterproof footwear in shoulder season
On the map
Overnight camping
Day-use only — overnight not permitted
Day-use only — Boulder OSMP closes Wonderland at sunset. Wildlife-refuge designation makes any overnight presence prohibited.
Trail-tested picks for Wonderland Lake
Curated for this trail's terrain, elevation, and typical conditions.
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