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United States
Colorado
Boulder County
Pine Brook Hill

Anne U. White Trail

Easy

4.8

(2887)

12,053

hikers

Anne U. White Trail

01:29

5.09km

140m

Hiking

Hike the easy 3.2-mile Anne U. White Trail in Boulder County, following Fourmile Canyon Creek to a picturesque waterfall and foothill views.

Last updated: February 26, 2026

Waypoints

A

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Parking

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1

26 m

Anne U White Trail

Highlight (Segment) • Trail

The Anne U White Trail is an almost 2-mile long trail that takes you through Four Mile Canyon Creek through a narrow canyon via a narrow canyon.

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5.09 km

End point

Parking

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Way Types & Surfaces

Way Types

5.07 km

< 100 m

Surfaces

5.08 km

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Elevation

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Weather

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Today

Thursday 7 May

17°C

4°C

15 %

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Max wind speed: 14.0 km/h

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Frequently Asked Questions

Where can I park for the Anne U. White Trail?

Parking for the Anne U. White Trail is available at the trailhead. Due to the trail's popularity, especially on weekends, it's highly recommended to arrive early in the morning or visit on weekdays to secure a spot and avoid crowds. There is no public transportation directly to the trailhead, so driving is the primary option.

Is the Anne U. White Trail dog-friendly?

Yes, dogs are permitted on the Anne U. White Trail. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all hikers.

When is the best time of year to hike this trail?

The Anne U. White Trail is beautiful year-round. Spring and summer offer vibrant wildflowers and lush riparian scenery, with the dense tree canopy providing welcome shade. In winter, the trail can be snow-packed, icy, or muddy, so lightweight traction devices might be beneficial. Visiting during the shoulder seasons (spring/fall) or on weekdays can help avoid peak crowds.

Are there any permits or fees required to hike the Anne U. White Trail?

No, there are no specific permits or entrance fees required to hike the Anne U. White Trail. It is part of Boulder County Parks & Open Space, which generally does not charge for access to its trails.

What is the terrain like on the Anne U. White Trail?

The trail meanders through a narrow canyon, following the Fourmile Canyon Creek and crossing it multiple times, often via rock-hop crossings. The path is generally well-defined, skirting rocky outcroppings and ledges. While mostly flat, there are a few short, memorable climbs, including a stair-stepping hill and a rocky scramble. After about a mile, the terrain opens up, offering views of the surrounding Boulder foothills. In winter, expect snow, ice, and mud.

What natural features or landmarks will I see along the way?

You'll experience a lush riparian habitat with a dense tree canopy and the scenic Fourmile Canyon Creek, which the trail crosses numerous times. Approximately halfway through the hike, there's a small, picturesque waterfall, perfect for a rest stop. The trail also offers views of the Boulder foothills as it opens up. The trail itself, named Anne U White Trail, is a highlight in itself.

Is the Anne U. White Trail suitable for beginners or families?

Yes, the Anne U. White Trail is generally considered easy and family-friendly. While there are a few short climbs, the overall elevation gain is relatively low, making it accessible for hikers with a moderate level of fitness. It's a great option for those new to hiking or looking for a relaxed outing.

Is the Anne U. White Trail a loop or an out-and-back route?

The Anne U. White Trail is an out-and-back route. It typically measures between 1.6 to 1.7 miles one way, making the full round trip approximately 3.1 to 3.3 miles. The trail ends abruptly at a sign indicating private property, requiring hikers to turn around and retrace their steps.

What kind of wildlife or plants can I expect to see?

The trail's lush riparian habitat supports diverse wildlife. Hikers often spot deer, foxes, and various bird species. In the spring and summer months, the canyon comes alive with vibrant wildflowers, adding to the scenic beauty.

Are there any specific regulations for hiking in Boulder County Parks & Open Space?

Yes, when hiking in Boulder County Parks & Open Space, including the Anne U. White Trail, it's important to follow Leave No Trace principles. Dogs must be leashed, and the trail is pedestrian-only, meaning bikes and horses are not allowed. Always stay on marked trails to protect sensitive ecosystems. For more detailed regulations, you can visit the Boulder County website.

What is the history behind the Anne U. White Trail?

The trail is dedicated to Anne U. White, a local conservationist who, along with her husband, played a crucial role in preserving Boulder's open spaces. The trail itself has a history of resilience; it was significantly damaged during the 2013 floods and remained closed for several years for restoration and rebuilding, eventually reopening in late 2019 or early 2020.

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Trail Reviews

Amy
April 28, 2025, Anne U White Trail

Great, easy hike that is perfect for kids. Extremely well maintained with lots of creek crossing rock hopping as the trail winds through the woods.

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